Auto merge of #59967 - Centril:rollup-bdqq7ux, r=Centril

Rollup of 7 pull requests

Successful merges:

 - #59856 (update polonius-engine)
 - #59877 (HirIdify hir::Def)
 - #59896 (Remove duplicated redundant spans)
 - #59900 (Remove [mut] syntax in pin docs)
 - #59906 (Make BufWriter use get_mut instead of manipulating inner in Write implementation)
 - #59936 (Fix cross-crate visibility of fictive variant constructors)
 - #59957 (Add missing backtick to Symbol documentation.)

Failed merges:

r? @ghost

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/io/buffered.rs b/src/libstd/io/buffered.rs
index 3370a447fcc..bf406bb9b0b 100644
--- a/src/libstd/io/buffered.rs
+++ b/src/libstd/io/buffered.rs
@@ -601,7 +601,7 @@ impl<W: Write> Write for BufWriter<W> {
         }
         if buf.len() >= self.buf.capacity() {
             self.panicked = true;
-            let r = self.inner.as_mut().unwrap().write(buf);
+            let r = self.get_mut().write(buf);
             self.panicked = false;
             r
         } else {
@@ -616,7 +616,7 @@ impl<W: Write> Write for BufWriter<W> {
         }
         if total_len >= self.buf.capacity() {
             self.panicked = true;
-            let r = self.inner.as_mut().unwrap().write_vectored(bufs);
+            let r = self.get_mut().write_vectored(bufs);
             self.panicked = false;
             r
         } else {