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Added NULL checks in Fl_Tree_Item::move()

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Greg Ercolano 2019-08-27 16:46:36 -07:00
parent 0d329a4699
commit 3340b33bf1
1 changed files with 3 additions and 0 deletions
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3
src/Fl_Tree_Item.cxx
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@ -492,17 +492,20 @@ int Fl_Tree_Item::move(Fl_Tree_Item *item, int op, int pos) {
case 0: // "above"
from_parent = this->parent();
to_parent = item->parent();
if ( !from_parent || !to_parent ) return -1;
from = from_parent->find_child(this);
to = to_parent->find_child(item);
break;
case 1: // "below"
from_parent = this->parent();
to_parent = item->parent();
if ( !from_parent || !to_parent ) return -1;
from = from_parent->find_child(this);
to = to_parent->find_child(item);
break;
case 2: // "into"
from_parent = this->parent();
if ( !from_parent ) return -1;
to_parent = item;
from = from_parent->find_child(this);
to = pos;