Ensure definate initialization


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4263 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAlloc/RegClass.cpp b/lib/CodeGen/RegAlloc/RegClass.cpp
index b92b709..788921b 100644
--- a/lib/CodeGen/RegAlloc/RegClass.cpp
+++ b/lib/CodeGen/RegAlloc/RegClass.cpp
@@ -158,7 +158,7 @@
 {
 
   unsigned int IGNodeListSize = IG.getIGNodeList().size(); 
-  double MinSpillCost;
+  double MinSpillCost = 0;
   IGNode *MinCostIGNode = NULL;
   bool isFirstNode = true;