branches: reduce nesting in for loop

mercurial/commands.py

@@ -1104,7 +1104,8 b' def branches(ui, repo, active=False, clo'
                   reverse=True)
 
     for tag, ctx, isactive, isopen in branches:
-        if (not active) or isactive:
+        if active and not isactive:
+            continue
             if isactive:
                 label = 'branches.active'
                 notice = ''