fix regression in pointer transformations

pybindgen/typehandlers/base.py

@@ -1063,6 +1063,8 @@ class TypeMatcher(object):
             ## Now try all the type transformations
             for transf in self._transformations:
                 untransformed_name = transf.get_untransformed_name(canonical_name)
+                if untransformed_name is None:
+                    continue
                 try:
                     return self._types[self._canonicalize_name(untransformed_name)], transf
                 except KeyError:

tests/test.py

@@ -10,7 +10,7 @@ import re
 
 class SmartPointerTransformation(typehandlers.TypeTransformation):
     def __init__(self):
-        self.rx = re.compile(r'MySmartPointer<(\w+)>')
+        self.rx = re.compile(r'(?:::)MySmartPointer<(\w+)>')
 
     def get_untransformed_name(self, name):
         m = self.rx.match(name)