Fix test tag

tests/errors/cdef_in_pyclass.pyx

+# mode: error
+
 class Pyclass(object):
     cdef bad(self):
         pass
 
 _ERRORS = """
- 2:9: cdef statement not allowed here
+ 4:9: cdef statement not allowed here
 """

tests/errors/cfunc_directive_in_pyclass.pyx

+# mode: error
 import cython
 
 class Pyclass(object):
@@ -6,5 +7,5 @@ class Pyclass(object):
         pass
 
 _ERRORS = """
- 5:4: cfunc directive is not allowed here
+ 6:4: cfunc directive is not allowed here
 """