Fix an inverted conditional, 

--chris


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43789 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Rewrite/Rewriter.cpp b/Rewrite/Rewriter.cpp
index a624fcc..a8bc99f 100644
--- a/Rewrite/Rewriter.cpp
+++ b/Rewrite/Rewriter.cpp
@@ -78,7 +78,7 @@
   Deltas[DeltaIdx].Delta += Change;
   
   // If it is now dead, remove it.
-  if (Deltas[DeltaIdx].Delta)
+  if (Deltas[DeltaIdx].Delta == 0)
     Deltas.erase(Deltas.begin()+DeltaIdx);
 }