Cleaned up unused labels

Deleted unused labels from compiler and fixed or allowed
unused labels in tests. This patch removes some gratuitous
unused labels and turns off the warning for unused labels
that are a necessary part of tests.  This will permit
setting the `unused_labels` lint to `warn`.

2 files changed, 2 insertions, 1 deletions

diff --git a/src/test/ui/for-loop-while/label_break_value.rs b/src/test/ui/for-loop-while/label_break_value.rs
index eb5be7742e0..18930ac811e 100644
--- a/src/test/ui/for-loop-while/label_break_value.rs
+++ b/src/test/ui/for-loop-while/label_break_value.rs
@@ -77,7 +77,7 @@ fn label_break_mixed(v: u32) -> u32 {
         }
         // Labeled breaking an outer loop still works
         'd: loop {
-            'e: {
+            {
                 if v == r {
                     break 'b;
                 }
diff --git a/src/test/ui/for-loop-while/loop-label-shadowing.rs b/src/test/ui/for-loop-while/loop-label-shadowing.rs
index acb53e254bb..9bedde67b78 100644
--- a/src/test/ui/for-loop-while/loop-label-shadowing.rs
+++ b/src/test/ui/for-loop-while/loop-label-shadowing.rs
@@ -5,6 +5,7 @@
 
 fn main() {
     let mut foo = Vec::new();
+    #[allow(unused_labels)]
     'foo: for i in &[1, 2, 3] {
         foo.push(*i);
     }