Remove unused variable to get rid of warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156466 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp
index 8f8c0e8..5d6e1a7 100644
--- a/lib/Transforms/Scalar/ObjCARC.cpp
+++ b/lib/Transforms/Scalar/ObjCARC.cpp
@@ -3902,7 +3902,7 @@
   if (Load->getParent() != BB) return;
 
   // Walk down to find the store and the release, which may be in either order.
-  BasicBlock::iterator I = Load, End = BB->end();
+  BasicBlock::iterator I = Load;
   ++I;
   AliasAnalysis::Location Loc = AA->getLocation(Load);
   StoreInst *Store = 0;