initialize SetCCResultContents, fixing PR1693

llvm-svn: 42193
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 4d87ac3..5943cc1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -161,6 +161,7 @@
   StackPointerRegisterToSaveRestore = 0;
   ExceptionPointerRegister = 0;
   ExceptionSelectorRegister = 0;
+  SetCCResultContents = UndefinedSetCCResult;
   SchedPreferenceInfo = SchedulingForLatency;
   JumpBufSize = 0;
   JumpBufAlignment = 0;