OnD0Exit: Close EC handle before sleep

Close the EC driver handle during D0 exit to avoid stale handles after
wake. The EC driver may restart during sleep, invalidating the handle.
The handle will be re-acquired in OnTimerExpire when the device wakes.

This fixes the HLK "DF - Sleep with IO during (Reliability)" test
failure.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: JohnAZoidberg

FrameworkSensors/Device.cpp

@@ -479,6 +479,13 @@ OnD0Exit(
             goto Exit;
         }
 
+        // Close EC handle before sleep to avoid stale handles after wake.
+        // The handle will be re-acquired in OnTimerExpire when the device wakes.
+        if (pDevice->m_CrosEcHandle != INVALID_HANDLE_VALUE) {
+            CloseHandle(pDevice->m_CrosEcHandle);
+            pDevice->m_CrosEcHandle = INVALID_HANDLE_VALUE;
+        }
+
         pDevice->m_PoweredOn = FALSE;
         InitPropVariantFromUInt32(SensorState_Idle,
                                   &(pDevice->m_pProperties->List[SENSOR_COMMON_PROPERTY_STATE].Value));