fix typo duncan noticed!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45459 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index c6fd113..ae5c398 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1291,7 +1291,7 @@
         return DAG.getConstant(0, VT);
       case 1:  // Known true.
         return DAG.getConstant(1, VT);
-      case 2:  // undefind.
+      case 2:  // Undefined.
         return DAG.getNode(ISD::UNDEF, VT);
       }
     }