Add the missed out call to init_c_code

theano/scalar/basic.py

@@ -3974,6 +3974,7 @@ class Composite(ScalarOp):
         # see __hash__ for comment on why there is no mention of fgraph
         # or module cache key here.
         self.init_c_code()    # self._c_code and self.nodenames
+        other.init_c_code()
         return (self._c_code == other._c_code)
 
     def __hash__(self):