[ObjCARC] Initialize return value

Mistakenly removed initialization of `Changed` in https://reviews.llvm.org/D87806.

diff --git a/llvm/lib/Transforms/ObjCARC/ObjCARCContract.cpp b/llvm/lib/Transforms/ObjCARC/ObjCARCContract.cpp
index db4fd66..2b04353 100644 (file)
--- a/llvm/lib/Transforms/ObjCARC/ObjCARCContract.cpp
+++ b/llvm/lib/Transforms/ObjCARC/ObjCARCContract.cpp
@@ -574,6 +574,7 @@ bool ObjCARCContract::run(Function &F, AAResults *A, DominatorTree *D) {
   if (!Run)
     return false;
 
+  Changed = false;
   AA = A;
   DT = D;
   PA.setAA(A);