Added missing return statement to InspectCommand

Affects issues:
- Fixed #1494

Plan/common/src/main/java/com/djrapitops/plan/commands/subcommands/InspectCommand.java

@@ -88,6 +88,7 @@ public class InspectCommand extends CommandNode {
 
         if (playerName == null) {
             sender.sendMessage(locale.getString(CommandLang.FAIL_NO_PERMISSION));
+            return;
         }
 
         Database.State dbState = dbSystem.getDatabase().getState();

Plan/common/src/main/java/com/djrapitops/plan/identification/UUIDUtility.java

@@ -65,6 +65,7 @@ public class UUIDUtility {
      * @return UUID of the player
      */
     public UUID getUUIDOf(String playerName) {
+        if (playerName == null) throw new IllegalArgumentException("Player name can not be null!");
         UUID uuid = getUUIDFromString(playerName);
         if (uuid != null) return uuid;