Fix shutdown order

I realize it's dead code but make sure quickjs is shut down in proper
order in case the code gets revived at some point in the future.

Author: bnoordhuis

src/sqlitejs.c

@@ -205,8 +205,10 @@ static globaljs_context *globaljs_init (sqlite3 *db) {
 static void globaljs_free (globaljs_context *js) {
     if (!js) return;
 
-    if (js->runtime) JS_FreeRuntime(js->runtime);
+    // order matters
+    if (js->runtime) js_std_free_handlers(js->runtime);
     if (js->context) JS_FreeContext(js->context);
+    if (js->runtime) JS_FreeRuntime(js->runtime);
     sqlite3_free(js);
 }