Some safety redundancy

Changelog.txt

@@ -1,7 +1,7 @@
 Version 2.1.182
     Fixed several errors in de locale (Thanks TheBusyBiscuit & w1tcherrr)
     Fixed a bug where double smelt never succeeded if the furnace was empty
-
+    Added some safety so that mcMMO automatic save interval is never more frequent than 1 minute
 
 Version 2.1.181
     mcMMO no longer pointlessly tries to check for missing UUIDs for FlatFile database

src/main/java/com/gmail/nossr50/mcMMO.java

@@ -621,7 +621,11 @@ public class mcMMO extends JavaPlugin {
 
     private void scheduleTasks() {
         // Periodic save timer (Saves every 10 minutes by default)
-        long saveIntervalTicks = Config.getInstance().getSaveInterval() * 1200;
+        long second = 20;
+        long minute = second * 60;
+
+        long saveIntervalTicks = Math.max(minute, Config.getInstance().getSaveInterval() * minute);
+
         new SaveTimerTask().runTaskTimer(this, saveIntervalTicks, saveIntervalTicks);
 
         // Cleanup the backups folder