Make TargetInfo::DescriptionString const (avoid compiler warnings)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54928 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index be81aa0..bb687d2 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -43,7 +43,7 @@
   unsigned char LongDoubleWidth, LongDoubleAlign;
   unsigned char LongWidth, LongAlign;
   unsigned char LongLongWidth, LongLongAlign;
-  char *DescriptionString;
+  const char *DescriptionString;
   
   const llvm::fltSemantics *FloatFormat, *DoubleFormat, *LongDoubleFormat;