This plugin is not properly shutting down its async tasks when it is being shut down.

[MarvinKlar]

When I isntalled the plugin on my server I noticed this error message on shutdown: [12:15:30 ERROR]: Nag author: 'mikeprimm' of 'Dynmap-WorldGuard' about the following: This plugin is not properly shutting down its async tasks when it is being shut down. This task may throw errors during the final shutdown logs and might not complete before process dies.

It's not a big deal, but catches my eye every time. I may just create a small PR to fix this. Would this be fine?