fix potential undefined DnD behavior for external drags
dragging from the tree-view (e.g. favorite sidebar or plugin-manager) will not set _drag_source. drag-motion may wrongly interpret it as "re-order".
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2074dbdbe2
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@ -418,6 +418,7 @@ private:
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{
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{
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delete _drag_icon;
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delete _drag_icon;
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_drag_icon = 0;
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_drag_icon = 0;
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_drag_source = 0;
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_drag_child = 0;
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_drag_child = 0;
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remove_placeholder ();
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remove_placeholder ();
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