Format libstd/sys with rustfmt

This commit applies rustfmt with rust-lang/rust's default settings to
files in src/libstd/sys *that are not involved in any currently open PR*
to minimize merge conflicts. THe list of files involved in open PRs was
determined by querying GitHub's GraphQL API with this script:
https://gist.github.com/dtolnay/aa9c34993dc051a4f344d1b10e4487e8

With the list of files from the script in outstanding_files, the
relevant commands were:

    $ find src/libstd/sys -name '*.rs' \
        | xargs rustfmt --edition=2018 --unstable-features --skip-children
    $ rg libstd/sys outstanding_files | xargs git checkout --

Repeating this process several months apart should get us coverage of
most of the rest of the files.

To confirm no funny business:

    $ git checkout $THIS_COMMIT^
    $ git show --pretty= --name-only $THIS_COMMIT \
        | xargs rustfmt --edition=2018 --unstable-features --skip-children
    $ git diff $THIS_COMMIT  # there should be no difference

1 files changed, 44 insertions, 21 deletions

diff --git a/src/libstd/sys/windows/ext/fs.rs b/src/libstd/sys/windows/ext/fs.rs
index 23964dc5bd5..7eaff226a76 100644
--- a/src/libstd/sys/windows/ext/fs.rs
+++ b/src/libstd/sys/windows/ext/fs.rs
@@ -2,11 +2,11 @@
 
 #![stable(feature = "rust1", since = "1.0.0")]
 
-use crate::fs::{self, OpenOptions, Metadata};
+use crate::fs::{self, Metadata, OpenOptions};
 use crate::io;
 use crate::path::Path;
 use crate::sys;
-use crate::sys_common::{AsInnerMut, AsInner};
+use crate::sys_common::{AsInner, AsInnerMut};
 
 /// Windows-specific extensions to [`File`].
 ///
@@ -265,23 +265,28 @@ pub trait OpenOptionsExt {
 #[stable(feature = "open_options_ext", since = "1.10.0")]
 impl OpenOptionsExt for OpenOptions {
     fn access_mode(&mut self, access: u32) -> &mut OpenOptions {
-        self.as_inner_mut().access_mode(access); self
+        self.as_inner_mut().access_mode(access);
+        self
     }
 
     fn share_mode(&mut self, share: u32) -> &mut OpenOptions {
-        self.as_inner_mut().share_mode(share); self
+        self.as_inner_mut().share_mode(share);
+        self
     }
 
     fn custom_flags(&mut self, flags: u32) -> &mut OpenOptions {
-        self.as_inner_mut().custom_flags(flags); self
+        self.as_inner_mut().custom_flags(flags);
+        self
     }
 
     fn attributes(&mut self, attributes: u32) -> &mut OpenOptions {
-        self.as_inner_mut().attributes(attributes); self
+        self.as_inner_mut().attributes(attributes);
+        self
     }
 
     fn security_qos_flags(&mut self, flags: u32) -> &mut OpenOptions {
-        self.as_inner_mut().security_qos_flags(flags); self
+        self.as_inner_mut().security_qos_flags(flags);
+        self
     }
 }
 
@@ -468,14 +473,30 @@ pub trait MetadataExt {
 
 #[stable(feature = "metadata_ext", since = "1.1.0")]
 impl MetadataExt for Metadata {
-    fn file_attributes(&self) -> u32 { self.as_inner().attrs() }
-    fn creation_time(&self) -> u64 { self.as_inner().created_u64() }
-    fn last_access_time(&self) -> u64 { self.as_inner().accessed_u64() }
-    fn last_write_time(&self) -> u64 { self.as_inner().modified_u64() }
-    fn file_size(&self) -> u64 { self.as_inner().size() }
-    fn volume_serial_number(&self) -> Option<u32> { self.as_inner().volume_serial_number() }
-    fn number_of_links(&self) -> Option<u32> { self.as_inner().number_of_links() }
-    fn file_index(&self) -> Option<u64> { self.as_inner().file_index() }
+    fn file_attributes(&self) -> u32 {
+        self.as_inner().attrs()
+    }
+    fn creation_time(&self) -> u64 {
+        self.as_inner().created_u64()
+    }
+    fn last_access_time(&self) -> u64 {
+        self.as_inner().accessed_u64()
+    }
+    fn last_write_time(&self) -> u64 {
+        self.as_inner().modified_u64()
+    }
+    fn file_size(&self) -> u64 {
+        self.as_inner().size()
+    }
+    fn volume_serial_number(&self) -> Option<u32> {
+        self.as_inner().volume_serial_number()
+    }
+    fn number_of_links(&self) -> Option<u32> {
+        self.as_inner().number_of_links()
+    }
+    fn file_index(&self) -> Option<u64> {
+        self.as_inner().file_index()
+    }
 }
 
 /// Windows-specific extensions to [`FileType`].
@@ -495,8 +516,12 @@ pub trait FileTypeExt {
 
 #[unstable(feature = "windows_file_type_ext", issue = "0")]
 impl FileTypeExt for fs::FileType {
-    fn is_symlink_dir(&self) -> bool { self.as_inner().is_symlink_dir() }
-    fn is_symlink_file(&self) -> bool { self.as_inner().is_symlink_file() }
+    fn is_symlink_dir(&self) -> bool {
+        self.as_inner().is_symlink_dir()
+    }
+    fn is_symlink_file(&self) -> bool {
+        self.as_inner().is_symlink_file()
+    }
 }
 
 /// Creates a new file symbolic link on the filesystem.
@@ -515,8 +540,7 @@ impl FileTypeExt for fs::FileType {
 /// }
 /// ```
 #[stable(feature = "symlink", since = "1.1.0")]
-pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
-                                                    -> io::Result<()> {
+pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()> {
     sys::fs::symlink_inner(src.as_ref(), dst.as_ref(), false)
 }
 
@@ -536,7 +560,6 @@ pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
 /// }
 /// ```
 #[stable(feature = "symlink", since = "1.1.0")]
-pub fn symlink_dir<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
-                                                   -> io::Result<()> {
+pub fn symlink_dir<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()> {
     sys::fs::symlink_inner(src.as_ref(), dst.as_ref(), true)
 }