Get rid of some memory leaks identified by Valgrind


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25960 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index e4691b3..e2049f1 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -1998,4 +1998,5 @@
     SL = createBURRListDAGScheduler(DAG, BB);
   }
   BB = SL->Run();
+  delete SL;
 }