Fix uninitialized timestamps being passed to the gesture lib

ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc

Index: ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc
diff --git a/ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc b/ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc
index 795fe2b3d3b9ffe2c8ba2376730fb2ce00bddec8..2b08b9844192b202800467e7a8e7b4d478eb09d3 100644
--- a/ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc
+++ b/ui/events/ozone/evdev/libgestures_glue/gesture_timer_provider.cc
@@ -29,7 +29,10 @@ struct GesturesTimer {
  private:
   void OnTimerExpired() {
     struct timespec ts;
-    DCHECK(!clock_gettime(CLOCK_MONOTONIC, &ts));
+    int fail = clock_gettime(CLOCK_MONOTONIC, &ts);
+    DCHECK(!fail);
+
+    // Run the callback and reschedule the next run if requested.
     stime_t next_delay = callback_(StimeFromTimespec(&ts), callback_data_);
     if (next_delay >= 0) {
       timer_.Start(FROM_HERE,