删除冗余变量

server.c

@@ -120,7 +120,6 @@ int send_data(int accept_fd, char *data, size_t length) {
 int send_all(char* file_path, THREADTIMER *timer) {
     int re = 1;
     FILE *fp = openFile(file_path, LOCK_SH, "rb");
-    size_t numbytes;
     if(fp) {
         timer->fp = fp;
         timer->is_open = 1;