NGX_HTTP_IMAGE_GIF  415 http/modules/ngx_http_image_filter_module.c             return NGX_HTTP_IMAGE_GIF;
NGX_HTTP_IMAGE_GIF  686 http/modules/ngx_http_image_filter_module.c     case NGX_HTTP_IMAGE_GIF:
NGX_HTTP_IMAGE_GIF  990 http/modules/ngx_http_image_filter_module.c     case NGX_HTTP_IMAGE_GIF:
NGX_HTTP_IMAGE_GIF 1066 http/modules/ngx_http_image_filter_module.c     case NGX_HTTP_IMAGE_GIF: