[PATCH 0/2] MR8790: Draft: comctl32/treeview: Return from TREEVIEW_LButtonDown when the treeview handle is invalid.

[Jacob Czekalla (＠JacobCzekalla)]

LButtonDown should return when the treeview handle is invalid (e.g. destroyed) after NM_CLICK to prevent further message processing.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58211