Fix mercurial fetcher in fetch2

The _build_revision method in Hg class gets called with the wrong number
of arguments. This tiny patch adds a 5th argument to the method
declaration to prevent python from throwing an exception.

(Bitbake rev: 623e9c7f7a9cf12b8c81c26cc608990682a601dd)

Signed-off-by: Julian Pidancet <julian.pidancet@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/hg.py

@@ -166,7 +166,7 @@ class Hg(FetchMethod):
         output = runfetchcmd(self._buildhgcommand(ud, d, "info"), d)
         return output.strip()
 
-    def _build_revision(self, url, ud, d):
+    def _build_revision(self, url, ud, d, name):
         return ud.revision
 
     def _revision_key(self, url, ud, d, name):