lib/igt_fb: Add igt_put_cairo_ctx as counter to igt_get_cairo_ctx

This will allow support for NV12 in the future, where igt_get_cairo_ctx
will return a RGB image to draw with, which will be converted in
igt_put_cairo_ctx so tests don't have to add special support for NV12.

This is the same as cairo_destroy + checking for errors, but not all
tests use this correctly so it's better to have a single handler for it.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/kms_setmode.c b/tests/kms_setmode.c
index 206d3606..06241b19 100644
--- a/tests/kms_setmode.c
+++ b/tests/kms_setmode.c
@@ -161,7 +161,7 @@ static int paint_fb(struct igt_fb *fb, const char *test_name,
 					  crtc_str[i]);
 	}
 
-	cairo_destroy(cr);
+	igt_put_cairo_ctx(drm_fd, fb, cr);
 
 	return 0;
 }