rollbar: change checking for _rollbar existence to inside fx() call due to race condition
rollbar: change checking for _rollbar existence to inside fx()
call due to race condition

szkl/koding,gokmen/koding,usirin/koding,koding/koding,usirin/koding,jack89129/koding,koding/koding,rjeczalik/koding,usirin/koding,rjeczalik/koding,cihangir/koding,cihangir/koding,mertaytore/koding,jack89129/koding,jack89129/koding,cihangir/koding,drewsetski/koding,usirin/koding,szkl/koding,koding/koding,andrewjcasal/koding,sinan/koding,mertaytore/koding,gokmen/koding,szkl/koding,acbodine/koding,andrewjcasal/koding,rjeczalik/koding,usirin/koding,andrewjcasal/koding,alex-ionochkin/koding,mertaytore/koding,sinan/koding,kwagdy/koding-1,andrewjcasal/koding,gokmen/koding,sinan/koding,alex-ionochkin/koding,kwagdy/koding-1,acbodine/koding,kwagdy/koding-1,alex-ionochkin/koding,drewsetski/koding,drewsetski/koding,gokmen/koding,gokmen/koding,drewsetski/koding,rjeczalik/koding,acbodine/koding,gokmen/koding,jack89129/koding,kwagdy/koding-1,koding/koding,gokmen/koding,alex-ionochkin/koding,drewsetski/koding,cihangir/koding,jack89129/koding,andrewjcasal/koding,drewsetski/koding,rjeczalik/koding,kwagdy/koding-1,usirin/koding,koding/koding,koding/koding,szkl/koding,sinan/koding,szkl/koding,kwagdy/koding-1,drewsetski/koding,sinan/koding,cihangir/koding,mertaytore/koding,acbodine/koding,drewsetski/koding,rjeczalik/koding,sinan/koding,cihangir/koding,mertaytore/koding,usirin/koding,alex-ionochkin/koding,andrewjcasal/koding,andrewjcasal/koding,andrewjcasal/koding,szkl/koding,szkl/koding,alex-ionochkin/koding,acbodine/koding,rjeczalik/koding,cihangir/koding,acbodine/koding,alex-ionochkin/koding,alex-ionochkin/koding,gokmen/koding,acbodine/koding,mertaytore/koding,mertaytore/koding,cihangir/koding,rjeczalik/koding,kwagdy/koding-1,mertaytore/koding,koding/koding,sinan/koding,szkl/koding,acbodine/koding,jack89129/koding,koding/koding,jack89129/koding,jack89129/koding,sinan/koding,kwagdy/koding-1,usirin/koding