Fix for libical >= 4

Index: libicalmapi/vconverter.cpp
--- libicalmapi/vconverter.cpp.orig
+++ libicalmapi/vconverter.cpp
@@ -2592,7 +2592,7 @@ HRESULT VConverter::HrUpdateReminderTime(icalcomponent
 		return MAPI_E_NOT_FOUND;
 
 	memset(&sittTrigger, 0, sizeof(icaltriggertype));
-	sittTrigger.duration = icaldurationtype_from_int(-1 * lReminder * 60); // set seconds
+	sittTrigger.duration = icaldurationtype_from_seconds(-1 * lReminder * 60); // set seconds
 	auto lpicProp = icalcomponent_get_first_property(lpicAlarm, ICAL_TRIGGER_PROPERTY);
 	if (lpicProp) {
 		icalcomponent_remove_property(lpicAlarm, lpicProp);
