Fix assert condition.

llvm-svn: 146987
diff --git a/llvm/lib/CodeGen/LiveRangeCalc.cpp b/llvm/lib/CodeGen/LiveRangeCalc.cpp
index a7d5af5..1d6c3c5 100644
--- a/llvm/lib/CodeGen/LiveRangeCalc.cpp
+++ b/llvm/lib/CodeGen/LiveRangeCalc.cpp
@@ -65,7 +65,7 @@
   assert(DomTree && "Missing dominator tree");
 
   MachineBasicBlock *KillMBB = Indexes->getMBBFromIndex(Kill.getPrevSlot());
-  assert(Kill && "No MBB at Kill");
+  assert(KillMBB && "No MBB at Kill");
 
   // Is there a def in the same MBB we can extend?
   if (LI->extendInBlock(Indexes->getMBBStartIdx(KillMBB), Kill))