don't delete when we don't loop.

theano/compile/profiling.py

@@ -688,6 +688,7 @@ class ProfileStats(object):
                                                 node_memory_saved_by_view)
             max_node_memory_saved_by_inplace = max(
                 max_node_memory_saved_by_inplace, node_memory_saved_by_inplace)
+
             del fgraph, nodes_mem, post_thunk_old_storage, node
 
         if len(fct_memory) > 1: