plugin: display: Add check NULL dereference

Fix static analysis NULL dereference issue.

Change-Id: I5cca401e4cd9a1b52e19e30dbfbebd747c6a3aed
Signed-off-by: Yunhee Seo <yuni.seo@samsung.com>

diff --git a/plugins/wearable/display/core.c b/plugins/wearable/display/core.c
index 4f883c1..02468b9 100644 (file)
--- a/plugins/wearable/display/core.c
+++ b/plugins/wearable/display/core.c
@@ -948,7 +948,7 @@ static void sec_dsim_uevent_changed(struct udev_device *dev)
 
        if (!fnmatch(SEC_DSIM_PATH, devpath, 0)) {
                action = udev_device_get_action(dev);
-               if (!strcmp(action, UDEV_CHANGE)) {
+               if (action && !strcmp(action, UDEV_CHANGE)) {
                        ret = gdbus_signal_emit(NULL,
                                        DEVICED_PATH_DISPLAY,
                                        DEVICED_INTERFACE_DISPLAY,