address comment

Author: diggerlin

llvm/lib/Target/PowerPC/PPCReduceCRLogicals.cpp

@@ -250,8 +250,7 @@ static bool splitMBB(BlockSplitInfo &BSI) {
 
   // Set the call frame size on ThisMBB to the new basic blocks.
   // See https://reviews.llvm.org/D156113.
-  unsigned CallFrameSize = TII->getCallFrameSizeAt(ThisMBB->back());
-  NewMBB->setCallFrameSize(CallFrameSize);
+  NewMBB->setCallFrameSize(TII->getCallFrameSizeAt(ThisMBB->back()));
 
   LLVM_DEBUG(dbgs() << "After splitting, ThisMBB:\n"; ThisMBB->dump());
   LLVM_DEBUG(dbgs() << "NewMBB:\n"; NewMBB->dump());