remove one more occurance of this that snuck in

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21271 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCISelPattern.cpp

@@ -663,7 +663,7 @@ static bool NodeHasRecordingVariant(unsigned NodeOpcode) {
   default: return false;
   case ISD::AND:
   case ISD::OR: 
-  case ISD::ZERO_EXTEND_INREG: return true;
+    return true;
   }
 }