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-rw-r--r--src/fltk-widgets-valuators-sliders.adb1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/fltk-widgets-valuators-sliders.adb b/src/fltk-widgets-valuators-sliders.adb
index 793fffb..4c99cca 100644
--- a/src/fltk-widgets-valuators-sliders.adb
+++ b/src/fltk-widgets-valuators-sliders.adb
@@ -123,6 +123,7 @@ package body FLTK.Widgets.Valuators.Sliders is
Extra_Final (This);
if This.Void_Ptr /= Null_Pointer and This.Needs_Dealloc then
free_fl_slider (This.Void_Ptr);
+ This.Void_Ptr := Null_Pointer;
end if;
end Finalize;