# HG changeset patch
# User Jun Wu <quark@fb.com>
# Date 1463254865 -3600
# Node ID 52749d8aba99e80f1fcaa60c5282dc8c76a2449e
# Parent  372afb75f465ef3c9d124cd435d0715a17f835cc
svnmeta: do not iterate revmap directly

As planned by the previous patch, replace self.revmap.iterkeys with the newly
added method in get_parent_svn_branch_and_rev.

diff --git a/hgsubversion/svnmeta.py b/hgsubversion/svnmeta.py
--- a/hgsubversion/svnmeta.py
+++ b/hgsubversion/svnmeta.py
@@ -551,12 +551,7 @@ class SVNMeta(object):
         """
         if (number, branch) in self.revmap:
             return number, branch
-        real_num = 0
-        for num, br in self.revmap.iterkeys():
-            if br != branch:
-                continue
-            if num <= number and num > real_num:
-                real_num = num
+        real_num = self.revmap.branchmaxrevnum(branch, number)
         if branch in self.branches:
             parent_branch = self.branches[branch][0]
             parent_branch_rev = self.branches[branch][1]