Don't give warnings from safemalloc for aria_pack --help

storage/maria/maria_pack.c

@@ -204,6 +204,7 @@ static QUEUE queue;
 static HUFF_COUNTS *global_count;
 static char zero_string[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 static const char *load_default_groups[]= { "ariapack",0 };
+static char **default_argv;
 
 /*
   Register handler error messages for usage with my_error()
@@ -225,7 +226,6 @@ int main(int argc, char **argv)
 {
   int error,ok;
   PACK_MRG_INFO merge;
-  char **default_argv;
   my_bool no_control_file= 0;
   MY_INIT(argv[0]);
 
@@ -293,6 +293,14 @@ int main(int argc, char **argv)
 #endif
 }
 
+static void my_exit(int error)
+{
+  free_defaults(default_argv);
+  maria_end();
+  my_end(verbose ? MY_CHECK_ERROR | MY_GIVE_INFO : MY_CHECK_ERROR);
+  exit(error);
+}
+
 enum options_mp {OPT_CHARSETS_DIR_MP=256, OPT_AUTO_CLOSE};
 
 static struct my_option my_long_options[] =
@@ -414,11 +422,12 @@ get_one_option(const struct my_option *opt,
     break;
   case 'V':
     print_version();
-    exit(0);
+    my_exit(0);
+    break;
   case 'I':
   case '?':
     usage();
-    exit(0);
+    my_exit(0);
   }
   return 0;
 }
@@ -435,12 +444,12 @@ static void get_options(int *argc,char ***argv)
     write_loop=1;
 
   if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
-    exit(ho_error);
+    my_exit(ho_error);
 
   if (!*argc)
   {
     usage();
-    exit(1);
+    my_exit(1);
   }
   if (join_table)
   {