Make autoinit dispatch table read-only (#972)

That way it ends up in .rodata instead of .data

Author: bnoordhuis

quickjs.c

@@ -7386,7 +7386,7 @@ int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj)
 /* return the value associated to the autoinit property or an exception */
 typedef JSValue JSAutoInitFunc(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque);
 
-static JSAutoInitFunc *js_autoinit_func_table[] = {
+static JSAutoInitFunc *const js_autoinit_func_table[] = {
     js_instantiate_prototype, /* JS_AUTOINIT_ID_PROTOTYPE */
     js_module_ns_autoinit, /* JS_AUTOINIT_ID_MODULE_NS */
     JS_InstantiateFunctionListItem2, /* JS_AUTOINIT_ID_PROP */