sduwangning/ngx_http_secure_download — pull request #1 by mozatkey (2012-10-09 03:52:08+00:00)
Title:  fix bug:NULL for strstr function

if url has no args, the process will be core dumped, just like the logs:

[notice] 1775#0: signal 17 (SIGCHLD) received
[alert] 1775#0: worker process 1829 exited on signal 11 (core dumped)