Michal Srb authored Nov 01, 2014 and Peter Hutterer committed Nov 03, 2014

_XiGetExtensionVersion was called from XGetExtensionVersion and from
_XiCheckExtInit. When called from _XiCheckExtInit, nothing accounted for the
fact that it can return ((XExtensionVersion *) NoSuchExtension) in case of
error. Also it recursively calls _XiCheckExtInit potentionally causing multiple
unlocks if _XiCheckExtInit fails.
-> Remove it and call directly _XiGetExtensionVersionRequest and only call
_XiCheckExtInit only from XGetExtensionVersion.

Signed-off-by: Michal Srb <msrb@suse.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>