Use external logger in zlog stream if set

Author: bukka

sapi/fpm/fpm/zlog.c

@@ -501,6 +501,11 @@ ssize_t zlog_stream_str(struct zlog_stream *stream, const char *str, size_t str_
 zlog_bool zlog_stream_finish(struct zlog_stream *stream) /* {{{ */
 {
 	if (stream->use_buffer) {
+		if (external_logger != NULL) {
+			external_logger(flags & ZLOG_LEVEL_MASK,
+					stream->buf + stream->prefix_len, stream->len - stream->prefix_len);
+		}
+
 #ifdef HAVE_SYSLOG_H
 		if (zlog_fd == ZLOG_SYSLOG) {
 			stream->buf[stream->len] = '\0';