Just do a diagIfAmbiguous -> warnIfAmbiguous rename.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57746 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index 1423476..7e83c5b 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -1228,12 +1228,12 @@
     if (Tok.is(tok::l_paren)) {
       // When not in file scope, warn for ambiguous function declarators, just
       // in case the author intended it as a variable definition.
-      bool diagIfAmbiguous = D.getContext() != Declarator::FileContext;
+      bool warnIfAmbiguous = D.getContext() != Declarator::FileContext;
       // The paren may be part of a C++ direct initializer, eg. "int x(1);".
       // In such a case, check if we actually have a function declarator; if it
       // is not, the declarator has been fully parsed.
       if (getLang().CPlusPlus && D.mayBeFollowedByCXXDirectInit() &&
-          !isCXXFunctionDeclarator(diagIfAmbiguous))
+          !isCXXFunctionDeclarator(warnIfAmbiguous))
         break;
       ParseFunctionDeclarator(ConsumeParen(), D);
     } else if (Tok.is(tok::l_square)) {