Better --version argument parsing

src/manager/kiwix-manage.cpp

@@ -223,7 +223,7 @@ int main(int argc, char** argv)
 
   int option_index = 0;
   int c;
-  while (true) {
+  while (true && argc == 2) {
     c = getopt_long(argc, argv, "v", long_options, &option_index);
     if (c == -1)
       break;