[TD-3801]<fix>: taosdump coverity scan issue. (#5844)

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdump/taosdump.c

@@ -517,7 +517,8 @@ int main(int argc, char *argv[]) {
 
   /* Parse our arguments; every option seen by parse_opt will be
      reflected in arguments. */
-  parse_args(argc, argv, &g_args);
+  if (argc > 1)
+    parse_args(argc, argv, &g_args);
 
   argp_parse(&argp, argc, argv, 0, 0, &g_args);