Comment dumper: silence a warning by not casting away const


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160972 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/CommentDumper.cpp b/lib/AST/CommentDumper.cpp
index 764492f..f02ea33 100644
--- a/lib/AST/CommentDumper.cpp
+++ b/lib/AST/CommentDumper.cpp
@@ -75,7 +75,7 @@
 void CommentDumper::dumpComment(const Comment *C) {
   dumpIndent();
   OS << "(" << C->getCommentKindName()
-     << " " << (void *) C;
+     << " " << (const void *) C;
   dumpSourceRange(C);
 }