make it more clear what 'foo' is


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44653 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/Type.cpp b/AST/Type.cpp
index e1d2083..4befdcb 100644
--- a/AST/Type.cpp
+++ b/AST/Type.cpp
@@ -579,7 +579,7 @@
 //===----------------------------------------------------------------------===//
 
 void QualType::dump(const char *msg) const {
-  std::string R = "foo";
+  std::string R = "identifier";
   getAsStringInternal(R);
   if (msg)
     fprintf(stderr, "%s: %s\n", msg, R.c_str());