virgl: Convert errno to string.
Fix defect reported by Coverity Scan.
Invalid type in argument to printf format specifier (PRINTF_ARGS) invalid_type: Argument *__errno_location() to format specifier %s was expected to have type char * but has type int.
Fixes: d37124b0 ("virgl: add support for VIRGL_CAP_V2_UNTYPED_RESOURCE") Signed-off-by: Vinson Lee vlee@freedesktop.org
cc: @olv