ARC, Nios2: Silence build warnings. NFCI.

llvm-svn: 332663
diff --git a/llvm/lib/Target/ARC/ARCMachineFunctionInfo.h b/llvm/lib/Target/ARC/ARCMachineFunctionInfo.h
index bfb3fde..95ad294 100644
--- a/llvm/lib/Target/ARC/ARCMachineFunctionInfo.h
+++ b/llvm/lib/Target/ARC/ARCMachineFunctionInfo.h
@@ -25,16 +25,15 @@
   virtual void anchor();
   bool ReturnStackOffsetSet;
   int VarArgsFrameIndex;
-  unsigned VarArgFrameBytes;
   unsigned ReturnStackOffset;
 
 public:
   ARCFunctionInfo()
-      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0), VarArgFrameBytes(0),
+      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
         ReturnStackOffset(-1U), MaxCallStackReq(0) {}
 
   explicit ARCFunctionInfo(MachineFunction &MF)
-      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0), VarArgFrameBytes(0),
+      : ReturnStackOffsetSet(false), VarArgsFrameIndex(0),
         ReturnStackOffset(-1U), MaxCallStackReq(0) {
     // Functions are 4-byte (2**2) aligned.
     MF.setAlignment(2);