fix test exclusion

runtests.py

@@ -176,7 +176,7 @@ VER_DEP_MODULES = {
                                           'run.purecdef',
                                           ]),
     (2,7) : (operator.lt, lambda x: x in ['run.withstat_py', # multi context with statement
-                                          'run.yield_inside_lambda.py',
+                                          'run.yield_inside_lambda',
                                           ]),
     # The next line should start (3,); but this is a dictionary, so
     # we can only have one (3,) key.  Since 2.7 is supposed to be the