ADT/SparseMultiSetTest.cpp: Try to appease cygwin-clang (libstdc++-4.5) on stage2. [-Wsign-compare]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173127 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/SparseMultiSetTest.cpp b/unittests/ADT/SparseMultiSetTest.cpp
index 4ac0388..d8999ca 100644
--- a/unittests/ADT/SparseMultiSetTest.cpp
+++ b/unittests/ADT/SparseMultiSetTest.cpp
@@ -133,9 +133,9 @@
   Set.insert(8);
 
   // Erase all the 8s
-  EXPECT_EQ(5u, std::distance(Set.getHead(8), Set.end()));
+  EXPECT_EQ(5, std::distance(Set.getHead(8), Set.end()));
   Set.eraseAll(8);
-  EXPECT_EQ(0u, std::distance(Set.getHead(8), Set.end()));
+  EXPECT_EQ(0, std::distance(Set.getHead(8), Set.end()));
 
   // Clear and resize the universe.
   Set.clear();