[PATCH i-g-t 5/5] intel_gvtg_test: Handle system(3) return value.

[Tvrtko Ursulin <tursulin@xxxxxxxxxxx>]

From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Avoid the build warning by checking the pkill either did not find
any guests or managed to send a signal to all of them.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
 tools/intel_gvtg_test.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/intel_gvtg_test.c b/tools/intel_gvtg_test.c
index 7a29fbdde7cd..8c3d10cbd97f 100644
--- a/tools/intel_gvtg_test.c
+++ b/tools/intel_gvtg_test.c
@@ -144,7 +144,9 @@ static void create_guest(void)
 
 static void destroy_all_guest(void)
 {
-    system("pkill qemu");
+	int ret = system("pkill qemu");
+
+	igt_assert(ret == 0 || ret == 1);
 }
 
 static void remove_vgpu(void)
-- 
2.14.1

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