RandR: Allow duplicate monitor name when adding it
When calling RRSetMonitor, an existing monitor name is allowed. "If 'name' matches an existing Monitor on the screen, the existing one will be deleted as if RRDeleteMonitor were called." https://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt
It looks like the check was added by mistake, because in the next 'for' the monitor is deleted if it is in this list.
Steps to reproduce: Try RRSetMonitor with existing monitor name and other valid params OBSERVED RESULT: RRSetMonitors returns BadValue EXPECTED RESULT: RRSetMonitors returns OK
Amend: 7e1f86d4 Signed-off-by: Ilya Pominov ipominov@astralinux.ru