egl: Fix _eglPointerIsDereferencable() to ignore page residency
mincore() returns 0 on success, and -1 on failure. The last parameter is a vector of bytes with one entry for each page queried. mincore returns page residency information in the first bit of each byte in the vector. Residency doesn't actually matter when determining whether a pointer is dereferenceable, so the output vector can be ignored. What matters is whether mincore succeeds. See: http://man7.org/linux/man-pages/man2/mincore.2.html Signed-off-by:Miguel A. Vico <mvicomoya@nvidia.com> Acked-by:
Daniel Stone <daniels@collabora.com> Reviewed-by:
Emil Velikov <emil.velikov@collabora.com>