Make the UselessRegs argument optional in the LiveRangeEdit constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127181 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp
index 38e6c85..34ae3ec 100644
--- a/lib/CodeGen/InlineSpiller.cpp
+++ b/lib/CodeGen/InlineSpiller.cpp
@@ -333,7 +333,7 @@
 void InlineSpiller::spill(LiveInterval *li,
                           SmallVectorImpl<LiveInterval*> &newIntervals,
                           const SmallVectorImpl<LiveInterval*> &spillIs) {
-  LiveRangeEdit edit(*li, newIntervals, spillIs);
+  LiveRangeEdit edit(*li, newIntervals, &spillIs);
   spill(edit);
   if (VerifySpills)
     mf_.verify(&pass_, "After inline spill");