objc modern translator: fix up attribute for  dynamic property in a category.
// rdar://11095151


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156127 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Rewrite/RewriteModernObjC.cpp b/lib/Rewrite/RewriteModernObjC.cpp
index 14dba8f..e723d0c 100644
--- a/lib/Rewrite/RewriteModernObjC.cpp
+++ b/lib/Rewrite/RewriteModernObjC.cpp
@@ -7160,7 +7160,7 @@
     ClassProperties.push_back(&*I);
   
   Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
-                                /* Container */0,
+                                /* Container */IDecl,
                                 "_OBJC_$_PROP_LIST_",
                                 FullCategoryName);