fix crash for unauthenticated mpd commands
fix crash for unauthenticated mpd commands

emersion/groovebasin,neynah/groovebasin,gorlug/groovebasin,andrewrk/groovebasin,andrewrk/groovebasin,dwrensha/groovebasin,Qbuer/groovebasin,melissanoelle/groovebasin,sammcj/groovebasin,dwrensha/groovebasin,gorlug/groovebasin,emersion/groovebasin,emersion/groovebasin,CalebMorris/groovebasin,dwrensha/groovebasin,neynah/groovebasin,dwrensha/groovebasin,CalebMorris/groovebasin,Qbuer/groovebasin,andrewrk/groovebasin,CalebMorris/groovebasin,neynah/groovebasin,Qbuer/groovebasin,gorlug/groovebasin,sammcj/groovebasin,melissanoelle/groovebasin,sammcj/groovebasin,melissanoelle/groovebasin