A collection of minor type-o fixes.  The first two aren't testable, but all tests pass with them.  I stumbled across them while experimenting with a std::move that checks its argument for non-const.  The third corrects a test that is currently failing.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@190563 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/unordered_map b/include/unordered_map
index b53af14..fc30c2a 100644
--- a/include/unordered_map
+++ b/include/unordered_map
@@ -641,7 +641,7 @@
             : __cc(std::forward<_Args>(__args)...) {}
 
         __value_type(const __value_type& __v)
-            : __cc(std::move(__v.__cc)) {}
+            : __cc(__v.__cc) {}
 
         __value_type(__value_type&& __v)
             : __nc(std::move(__v.__nc)) {}