Fix -Asserts warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98927 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index 1b38842..851dd8e 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -1134,8 +1134,7 @@
   
   if (getOperator()->isSubClassOf("Instruction")) {
     const DAGInstruction &Inst = CDP.getInstruction(getOperator());
-    unsigned NumResults = Inst.getNumResults();
-    assert(NumResults <= 1 &&
+    assert(Inst.getNumResults() <= 1 &&
            "Only supports zero or one result instrs!");
 
     CodeGenInstruction &InstInfo =