Fix track specifier.

theano/tensor/opt.py

@@ -3737,7 +3737,7 @@ def local_abs_lift(node):
 
 
 @register_specialize
-@gof.local_optimizer([T.mul])
+@gof.local_optimizer([T.mul, T.true_div])
 def local_abs_merge(node):
     """
     merge abs generated by local_abs_lift when the canonizer don't