Fix uninitialized variable warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147678 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Rewrite/RewriteObjC.cpp b/lib/Rewrite/RewriteObjC.cpp
index 5cf1b11..0227b5d 100644
--- a/lib/Rewrite/RewriteObjC.cpp
+++ b/lib/Rewrite/RewriteObjC.cpp
@@ -1288,7 +1288,7 @@
   SmallVector<SourceLocation, 1> SelLocs;
   OldMsg->getSelectorLocs(SelLocs);
 
-  ObjCMessageExpr *NewMsg;
+  ObjCMessageExpr *NewMsg = 0;
   switch (OldMsg->getReceiverKind()) {
   case ObjCMessageExpr::Class:
     NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
@@ -1361,7 +1361,7 @@
   SmallVector<SourceLocation, 1> SelLocs;
   SmallVector<Expr*, 1> Args;
 
-  ObjCMessageExpr *NewMsg;
+  ObjCMessageExpr *NewMsg = 0;
   switch (OldMsg->getReceiverKind()) {
   case ObjCMessageExpr::Class:
     NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),