Revert r97674; it's causing failures

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97677 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprCXX.cpp b/lib/Sema/SemaExprCXX.cpp
index 309da29..5f46019 100644
--- a/lib/Sema/SemaExprCXX.cpp
+++ b/lib/Sema/SemaExprCXX.cpp
@@ -2881,7 +2881,7 @@
 
 CXXMemberCallExpr *Sema::BuildCXXMemberCallExpr(Expr *Exp, 
                                                 CXXMethodDecl *Method) {
-  if (PerformObjectArgumentInitialization(Exp, /*Qualifier=*/0, Method))
+  if (PerformObjectArgumentInitialization(Exp, Method))
     assert(0 && "Calling BuildCXXMemberCallExpr with invalid call?");
 
   MemberExpr *ME =