No really, don't store anything to this since it's unconditionally
set below.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180015 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index c678e8e..5d45f64 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -2605,7 +2605,7 @@
 
   unsigned Opc;
   bool isBoolZext = false;
-  const TargetRegisterClass *RC = 0;
+  const TargetRegisterClass *RC;
   switch (SrcVT.SimpleTy) {
   default: return 0;
   case MVT::i16: