make FromIterator use IntoIterator

This breaks all implementors of FromIterator, as they must now accept IntoIterator instead of Iterator. The fix for this is generally trivial (change the bound, and maybe call into_iter() on the argument to get the old argument).

Users of FromIterator should be unaffected because Iterators are IntoIterator.

[breaking-change]

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstd/sys/common/wtf8.rs b/src/libstd/sys/common/wtf8.rs
index e7cb67c6287..da5ab8e434a 100644
--- a/src/libstd/sys/common/wtf8.rs
+++ b/src/libstd/sys/common/wtf8.rs
@@ -356,9 +356,9 @@ impl Wtf8Buf {
 /// This replaces surrogate code point pairs with supplementary code points,
 /// like concatenating ill-formed UTF-16 strings effectively would.
 impl FromIterator<CodePoint> for Wtf8Buf {
-    fn from_iter<T: Iterator<Item=CodePoint>>(iterator: T) -> Wtf8Buf {
+    fn from_iter<T: IntoIterator<Item=CodePoint>>(iter: T) -> Wtf8Buf {
         let mut string = Wtf8Buf::new();
-        string.extend(iterator);
+        string.extend(iter);
         string
     }
 }