For the link provided, the crash occurs because of the presence of the unicode
middot character. The wchar_to_utf8() function in libobs utils checks for any
char that is less than 0 and returns zero. This results in dstr_to_lower() not
updating name_lower in xcompcap_props(). The empty name_lower string is pushed
to window_strings which causes qsort() to SEGV.
The following is the check that fails in libobs/utils/utf8.c:
292 if ((signed char)*w < 0) {
293 if ((flags & UTF8_IGNORE_ERROR) == 0)
294 return 0;
295 continue;
