Fix tests for python 3.7

python 3.7 removes re._pattern_type. Fix the one place where we were
depending on the type of regular expressions to compute the type
dynamically.

llvm-svn: 350093

lldb/packages/Python/lldbsuite/test/decorators.py

@@ -74,13 +74,14 @@ def fn_neq(x, y): return x != y
         LooseVersion(expected_str))
 
 
+_re_pattern_type = type(re.compile(''))
 def _match_decorator_property(expected, actual):
     if actual is None or expected is None:
         return True
 
     if isinstance(expected, no_match):
         return not _match_decorator_property(expected.item, actual)
-    elif isinstance(expected, (re._pattern_type,) + six.string_types):
+    elif isinstance(expected, (_re_pattern_type,) + six.string_types):
         return re.search(expected, actual) is not None
     elif hasattr(expected, "__iter__"):
         return any([x is not None and _match_decorator_property(x, actual)