[Fixed] Crash Wings3D when click or rename folder item.

[tkbd]

I remembered that I used emoji for make images.

At that time I could not readily enter emoji and clicked on the text area as well many times.
Drag & Drop forced an Emoji from outside the Wings window to text input area and it crashed.

(I don't know if this error log is useful...)

Code:

wings_wm:821: Dropped Event autosaver: redraw
Using GPU shaders.
Internal Error
Version: 2.1.4.1
Window: <0.79.0>
Reason: {badmatch,false}

Stack trace:
[{wings_geom_win,handle_event,2,[{file,"wings_geom_win.erl"},{line,504}]},
{wx_object,handle_msg,5,[{file,"wx_object.erl"},{line,450}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]

Already you fixed bug that about "Folder By that name already exist."
So the probability of occurrence of this problem is also decreasing.
I think that this case can be almost ignored.
Such tricky usage is a rare case.

Thank you for various measures and fixes,again.