stupid bug; forgot semicolon, sorry guys

theano/tensor/basic.py

@@ -2491,7 +2491,7 @@ class Alloc(gof.Op):
 
     def R_op(self, inputs, eval_points):
         # There is only one entry in eval_points and inputs
-        if None in eval_points
+        if None in eval_points:
             return [None]
         return self.make_node(*eval_points).outputs