Don't use nob_cmd_run() internally so to make it easier on C++ folks

Author: rexim

nob.h

@@ -788,7 +788,8 @@ NOBDEF void nob__go_rebuild_urself(int argc, char **argv, const char *source_pat
 
     if (!nob_rename(binary_path, old_binary_path)) exit(1);
     nob_cmd_append(&cmd, NOB_REBUILD_URSELF(binary_path, source_path));
-    if (!nob_cmd_run(&cmd)) {
+    Nob_Cmd_Opt opt = {0};
+    if (!nob_cmd_run_opt(&cmd, opt)) {
         nob_rename(old_binary_path, binary_path);
         exit(1);
     }
@@ -801,7 +802,7 @@ NOBDEF void nob__go_rebuild_urself(int argc, char **argv, const char *source_pat
 
     nob_cmd_append(&cmd, binary_path);
     nob_da_append_many(&cmd, argv, argc);
-    if (!nob_cmd_run(&cmd)) exit(1);
+    if (!nob_cmd_run_opt(&cmd, opt)) exit(1);
     exit(0);
 }