librustc: Disallow "mut" from distributing over bindings.

This is the backwards-incompatible part of per-binding-site "mut".

1 files changed, 5 insertions, 2 deletions

diff --git a/src/libstd/rt/io/extensions.rs b/src/libstd/rt/io/extensions.rs
index 1f82a9cd963..c6654e9dabe 100644
--- a/src/libstd/rt/io/extensions.rs
+++ b/src/libstd/rt/io/extensions.rs
@@ -343,7 +343,9 @@ impl<T: Reader> ReaderByteConversions for T {
     fn read_le_uint_n(&mut self, nbytes: uint) -> u64 {
         assert!(nbytes > 0 && nbytes <= 8);
 
-        let mut (val, pos, i) = (0u64, 0, nbytes);
+        let mut val = 0u64;
+        let mut pos = 0;
+        let mut i = nbytes;
         while i > 0 {
             val += (self.read_u8() as u64) << pos;
             pos += 8;
@@ -359,7 +361,8 @@ impl<T: Reader> ReaderByteConversions for T {
     fn read_be_uint_n(&mut self, nbytes: uint) -> u64 {
         assert!(nbytes > 0 && nbytes <= 8);
 
-        let mut (val, i) = (0u64, nbytes);
+        let mut val = 0u64;
+        let mut i = nbytes;
         while i > 0 {
             i -= 1;
             val += (self.read_u8() as u64) << i * 8;