drm_hwcomposer: initialize timeline_next

Initialize timeline_next to 0

Change-Id: I5d9f051ac659b06be19f5e5eaaab8a665f10832c
Reviewed-on: https://chrome-internal-review.googlesource.com/200646
Reviewed-by: Sean Paul <seanpaul@google.com>
Commit-Queue: Sean Paul <seanpaul@google.com>
Tested-by: Sean Paul <seanpaul@google.com>
diff --git a/hwcomposer.cpp b/hwcomposer.cpp
index 12b3e04..1c2b8b2 100644
--- a/hwcomposer.cpp
+++ b/hwcomposer.cpp
@@ -1194,6 +1194,7 @@
 		return ret;
 	}
 	hd->timeline_fd = ret;
+	hd->timeline_next = 0;
 
 	ret = hwc_set_initial_config(hd);
 	if (ret) {