Prevent unnecessary setuid call

Author: dwarfmaster

gunicorn/util.py

@@ -145,7 +145,7 @@ def set_owner_process(uid, gid, initgroups=False):
  elif gid != os.getgid():
  os.setgid(gid)
 
- if uid:
+ if uid and uid != os.getuid():
  os.setuid(uid)