Fix this debug output to handle the case where the loop has been deleted.

llvm-svn: 82994
diff --git a/llvm/lib/Analysis/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp
index e346cc0..43463cd 100644
--- a/llvm/lib/Analysis/LoopPass.cpp
+++ b/llvm/lib/Analysis/LoopPass.cpp
@@ -241,7 +241,8 @@
 
       if (Changed)
         dumpPassInfo(P, MODIFICATION_MSG, ON_LOOP_MSG,
-                     CurrentLoop->getHeader()->getNameStr());
+                     skipThisLoop ? "<deleted>" :
+                                    CurrentLoop->getHeader()->getNameStr());
       dumpPreservedSet(P);
 
       if (!skipThisLoop) {