Xwayland segfaults if keymap has no indicators
If a keymap has no indicators, the indicators field in _XkbDesc is NULL. However, this field later dereferenced unconditionally in some place (unclear where exactly), for example here:
sli->maps = xkb->indicators->maps;This does not yet cause a segfault since it only performs pointer arithmetic. However, this pointer arithmetic causes sli->maps not not be NULL, which disables later null pointer checks which then cause a segfault when dereferencing sli->maps.