Move handling of postfix-expression suffixes out of ParseCXXThis and into ParseCastExpression.
No functionality change, this follows the convention of how postfix-expressions are handled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54849 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index 2ecca33..c885619 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -540,7 +540,9 @@
   case tok::kw_static_cast:
     return ParseCXXCasts();
   case tok::kw_this:
-    return ParseCXXThis();
+    Res = ParseCXXThis();
+    // This can be followed by postfix-expr pieces.
+    return ParsePostfixExpressionSuffix(Res);
   case tok::at: {
     SourceLocation AtLoc = ConsumeToken();
     return ParseObjCAtExpression(AtLoc);