pullrequests: fix reversed diff

b2575bdb847c missed the 'we swap org/other ref' part.

rhodecode/controllers/pullrequests.py

@@ -336,7 +336,7 b' class PullrequestsController(BaseRepoCon'
         log.debug('running diff between %s@%s and %s@%s'
                   % (org_repo.scm_instance.path, org_ref,
                      other_repo.scm_instance.path, other_ref))
-        _diff = org_repo.scm_instance.get_diff(rev1=safe_str(org_ref[1]), rev2=safe_str(other_ref[1]))
+        _diff = org_repo.scm_instance.get_diff(rev1=safe_str(other_ref[1]), rev2=safe_str(org_ref[1]))
 
         diff_processor = diffs.DiffProcessor(_diff or '', format='gitdiff',
                                              diff_limit=diff_limit)