tcp_cmd

fix second message of unknown command

project/Core/Src/tcp_cmd.c

@@ -386,7 +386,9 @@ err_t tcp_cmd_recv(void* arg, struct tcp_pcb* pcb, struct pbuf* p, err_t err) {
     // Split string into tokens by delimiter (space)
     cmd_ptr = tcp_cmd_remove_leading_space(cmd, strlen(cmd));
     argv[0] = tcp_cmd_get_next_token(cmd_ptr, " ", &next);
-    argc = 1;
+    if(argv[0] != NULL) {
+        argc = 1;
+    }
     while (argv[argc - 1] != NULL && argc < MAX_TOKENS) {
         // Check if the next token is 0 (end of string) strlen doesn't work here
         if (*next == 0) {