bitbake fetcher: Make invalid url errors clearer

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3262 311d38ba-8fff-0310-9ca6-ca027cbcb966

bitbake/lib/bb/fetch/__init__.py

@@ -281,7 +281,8 @@ class FetchData(object):
         for m in methods:
             if m.supports(url, self, d):
                 self.method = m
-                break
+                return
+        raise NoMethodError("Missing implementation for url %s" % url)
 
     def setup_localpath(self, d):
         self.setup = True