Fix a bug in the typo correction replacement location.

I noticed the wrong text was being replaced with the correction while
working on expanding the "namespace-aware" typo correction to include
classes.

llvm-svn: 191450
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index d036612..10ed15a 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -3978,10 +3978,12 @@
   // arguments for the remaining parameters), don't make the call.
   if (Args.size() < NumArgsInProto) {
     if (Args.size() < MinArgs) {
+      MemberExpr *ME = dyn_cast<MemberExpr>(Fn);
       TypoCorrection TC;
       if (FDecl && (TC = TryTypoCorrectionForCall(
                         *this, DeclarationNameInfo(FDecl->getDeclName(),
-                                                   Fn->getLocStart()),
+                                                   (ME ? ME->getMemberLoc()
+                                                       : Fn->getLocStart())),
                         Args))) {
         unsigned diag_id =
             MinArgs == NumArgsInProto && !Proto->isVariadic()