Add 'const' qualifiers to static const char* variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186371 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index f1f02a8..142ebed 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -51,7 +51,7 @@
 INITIALIZE_PASS_END(LoopInfo, "loops", "Natural Loop Information", true, true)
 
 // Loop identifier metadata name.
-static const char* LoopMDName = "llvm.loop";
+static const char *const LoopMDName = "llvm.loop";
 
 //===----------------------------------------------------------------------===//
 // Loop implementation