ntdll: Add semi-stub implementation for SystemExecutionState query.

dlls/ntdll/nt.c

@@ -1328,6 +1328,15 @@ NTSTATUS WINAPI NtPowerInformation(
 			PowerCaps->DefaultLowLatencyWake = PowerSystemUnspecified;
 			return STATUS_SUCCESS;
 		}
+		case SystemExecutionState: {
+			PULONG ExecutionState = lpOutputBuffer;
+			FIXME("semi-stub: SystemExecutionState\n");
+			if (lpInputBuffer != NULL)
+				return STATUS_INVALID_PARAMETER;
+			/* FIXME: The actual state should be the value set by SetThreadExecutionState which is not currently implemented. */
+			*ExecutionState = ES_USER_PRESENT;
+			return STATUS_SUCCESS;
+		}
 		default:
 			/* FIXME: Needed by .NET Framework */
 			WARN("Unimplemented NtPowerInformation action: %d\n", InformationLevel);