Disable button clicks before getting the new EIP-191 data, not after

src_bagl/ui_flow_signMessage.c

@@ -18,10 +18,10 @@ static void dummy_pre_cb(void) {
 
 static void dummy_post_cb(void) {
     if (ui_pos == UI_191_POS_QUESTION) {
-        continue_displaying_message();
         // temporarily disable button clicks, they will be re-enabled as soon as new data
         // is received and the page is redrawn with ux_flow_init()
         G_ux.stack[0].button_push_callback = NULL;
+        continue_displaying_message();
     } else  // UI_191_END
     {
         ui_191_switch_to_message_end();