Fix removal and deletion of the resizable() of Fl_Group

If the resizable() of an Fl_Group is deleted it is automatically
removed from the group.

New: to avoid dangling resizable() pointers the resizable widget
is set to the group itself.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/Fl_Group.cxx b/src/Fl_Group.cxx
index 99b442a4e..aa663919f 100644
--- a/src/Fl_Group.cxx
+++ b/src/Fl_Group.cxx
@@ -501,6 +501,7 @@ void Fl_Group::remove(int index) {
   if (index < 0 || index >= children_) return;
   Fl_Widget &o = *child(index);
   if (&o == savedfocus_) savedfocus_ = 0;
+  if (&o == resizable_) resizable_ = this;
   if (o.parent_ == this) {      // this should always be true
     o.parent_ = 0;
   }