web ui: fix current track not displayed sometimes
web ui: fix current track not displayed sometimes

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