vulkan/wsi/x11: add null pointer check for the has_dri3_v1_2 test
This fixes a crash (ver_reply is NULL) when DISPLAY points to a remote display.
Closes: #6040 (closed) Signed-off-by: Brian Paul brianp@vmware.com
This fixes a crash (ver_reply is NULL) when DISPLAY points to a remote display.
Closes: #6040 (closed) Signed-off-by: Brian Paul brianp@vmware.com