minor fixes

lv_objx/lv_list.c

@@ -408,7 +408,7 @@ lv_obj_t * lv_list_get_prev_btn(const lv_obj_t * list, lv_obj_t * prev_btn)
     if(btn == NULL) return NULL;
 
     while(btn->signal_func != lv_list_btn_signal) {
-        btn = lv_obj_get_child(scrl, prev_btn);
+        btn = lv_obj_get_child(scrl, btn);
         if(btn == NULL) break;
     }
 
@@ -434,7 +434,7 @@ lv_obj_t * lv_list_get_next_btn(const lv_obj_t * list, lv_obj_t * prev_btn)
     if(btn == NULL) return NULL;
 
     while(btn->signal_func != lv_list_btn_signal) {
-        btn = lv_obj_get_child_back(scrl, prev_btn);
+        btn = lv_obj_get_child_back(scrl, btn);
         if(btn == NULL) break;
     }
 

lv_objx/lv_mbox.c

@@ -276,6 +276,8 @@ void lv_mbox_set_style(lv_obj_t * mbox, lv_mbox_style_t type, lv_style_t * style
             break;
     }
 
+    mbox_realign(mbox);
+
 }