Got SIGSEGV fault while running kms_dp_dsc test but did not
connect DP DSC capable monitor on eDP/DP port. This test daemon
should "SKIP" test without any problem. We found kms_dp_dsc
can't get proper drmModeConnector and caused this SIGSEGV fault
when release it. Make sure drmModeConnector is available before
free it can avoid this issue.

Signed-off-by: Lee Shawn C <shawn.c....@intel.com>
---
 tests/kms_dp_dsc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/kms_dp_dsc.c b/tests/kms_dp_dsc.c
index 2446fd82bba3..ea7c9f4f72ce 100644
--- a/tests/kms_dp_dsc.c
+++ b/tests/kms_dp_dsc.c
@@ -262,7 +262,7 @@ igt_main
        data_t data = {};
        igt_output_t *output;
        drmModeRes *res;
-       drmModeConnector *connector;
+       drmModeConnector *connector = NULL;
        int i, test_conn_cnt, test_cnt;
        int tests[] = {DRM_MODE_CONNECTOR_eDP, DRM_MODE_CONNECTOR_DisplayPort};
 
@@ -311,7 +311,8 @@ igt_main
        }
 
        igt_fixture {
-               drmModeFreeConnector(connector);
+               if (connector)
+                       drmModeFreeConnector(connector);
                drmModeFreeResources(res);
                close(data.debugfs_fd);
                close(data.drm_fd);
-- 
2.17.1

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