fix loading of OC::$REQUESTEDAPP if WTFE the app parameter is given but empty aka /?app
fix loading of OC::$REQUESTEDAPP if WTFE the app parameter is given but empty aka /?app

nextcloud/server,owncloud/core,sharidas/core,sharidas/core,andreas-p/nextcloud-server,phil-davis/core,endsguy/server,owncloud/core,pollopolea/core,endsguy/server,whitekiba/server,nextcloud/server,cernbox/core,lrytz/core,xx621998xx/server,lrytz/core,pixelipo/server,pmattern/server,pixelipo/server,michaelletzgus/nextcloud-server,IljaN/core,andreas-p/nextcloud-server,cernbox/core,pixelipo/server,whitekiba/server,whitekiba/server,sharidas/core,owncloud/core,nextcloud/server,jbicha/server,Ardinis/server,owncloud/core,pollopolea/core,michaelletzgus/nextcloud-server,whitekiba/server,bluelml/core,xx621998xx/server,andreas-p/nextcloud-server,endsguy/server,endsguy/server,Ardinis/server,jbicha/server,bluelml/core,bluelml/core,endsguy/server,pixelipo/server,lrytz/core,jbicha/server,michaelletzgus/nextcloud-server,jbicha/server,xx621998xx/server,Ardinis/server,sharidas/core,pollopolea/core,IljaN/core,nextcloud/server,pmattern/server,pollopolea/core,pmattern/server,owncloud/core,whitekiba/server,lrytz/core,xx621998xx/server,bluelml/core,sharidas/core,pmattern/server,pmattern/server,Ardinis/server,michaelletzgus/nextcloud-server,cernbox/core,cernbox/core,IljaN/core,pollopolea/core,IljaN/core,lrytz/core,andreas-p/nextcloud-server,xx621998xx/server,andreas-p/nextcloud-server,pixelipo/server,cernbox/core,Ardinis/server,jbicha/server,IljaN/core,bluelml/core