Fix handling of MessageTags times when we are not at UTC.

MessageTags time is in UTC, LocalDateTime doesn't care for the timezone
when parsing, so we were treating the UTC time as the local time rather
then adjusting from UTC to Local.

Now we adjust it properly.

irc/src/main/java/com/dmdirc/parser/irc/IRCParser.java

@@ -62,6 +62,7 @@ import java.security.SecureRandom;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
+import java.time.ZoneOffset;
 import java.time.format.DateTimeFormatter;
 import java.time.format.DateTimeParseException;
 import java.util.ArrayList;
@@ -1133,6 +1134,7 @@ public class IRCParser extends BaseSocketAwareParser implements SecureParser, En
             try {
                 lineTS = LocalDateTime.parse(line.getTags().get("time"),
                         DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"));
+                lineTS = lineTS.atOffset(ZoneOffset.UTC).atZoneSameInstant(ZoneId.systemDefault()).toLocalDateTime();
             } catch (final DateTimeParseException pe) { /* Do nothing. */ }
         }