lib: unnecessary header removal for drmtest.h, part 2

I've left unistd.h in it - it's not strictly required but most users
of drmtest.h want it for the open helpers, and then you kinda need to
close that file descriptor again ...

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/core_getclient.c b/tests/core_getclient.c
index 22f0ab2e..ed46e519 100644
--- a/tests/core_getclient.c
+++ b/tests/core_getclient.c
@@ -27,6 +27,9 @@
 
 #include <limits.h>
 #include <sys/ioctl.h>
+#include <stdlib.h>
+#include <errno.h>
+
 #include "drmtest.h"
 
 /**