Include space in suggestion mut in bindings

src/librustc_borrowck/borrowck/unused.rs

@@ -77,7 +77,7 @@ impl<'a, 'tcx> UnusedMutCx<'a, 'tcx> {
                 continue
             }
 
-            let mut_span = tcx.sess.codemap().span_until_char(ids[0].2, ' ');
+            let mut_span = tcx.sess.codemap().span_through_char(ids[0].2, ' ');
 
             // Ok, every name wasn't used mutably, so issue a warning that this
             // didn't need to be mutable.

src/test/ui/lint/suggestions.stderr

@@ -22,7 +22,7 @@ warning: variable does not need to be mutable
   --> $DIR/suggestions.rs:46:13
    |
 46 |         let mut a = (1); // should suggest no `mut`, no parens
-   |             ---^^
+   |             ----^
    |             |
    |             help: remove this `mut`
    |