In  sb_social_settings_load verifying the node is an enabled type

Issue:
With SB Social enabled metatag node settings are being overwritten and duplicate metatags are appearing on nodes not configured to support SB social.

Recreate:
On a site with Metatag module & SB social enabled configure a node with Metatag options and without SB Social. View the rendered Metatags, the values will be changed to match the default values of the various SB social plugins. In certain circumstances duplicate tags can also appear.

Fix:
In sb_social_settings_load verify the node being loaded is an enabled type.