Added a condiitonal to only route wmask dff when there's a write size.

compiler/tests/10_write_driver_array_wmask_test.py

@@ -20,7 +20,7 @@ import debug
 class write_driver_test(openram_test):
 
     def runTest(self):
-        globals.init("config_{0}".format(OPTS.tech_name))
+        globals.init_openram("config_{0}".format(OPTS.tech_name))
 
         # check write driver array for single port
         debug.info(2, "Testing write_driver_array for columns=8, word_size=8, write_size=4")