Cleaned up use of 'this' pointers in dispatched callback.
Cleaned up use of 'this' pointers in dispatched callback.

By 'dispatch'ing to a PID the lines touched here already carefully
avoided calling member functions of a destructed object. This change
tidyies up the code to directly pass in the address of the member
function to call instead of constructing a lambda capturing around the
invocation which needs to capture 'this'.

Review: https://reviews.apache.org/r/59841/

Gilbert88/mesos,kaysoky/mesos,gsantovena/mesos,asamerh4/mesos,gsantovena/mesos,reneploetz/mesos,chhsia0/mesos,asamerh4/mesos,neilconway/mesos,andschwa/mesos,chhsia0/mesos,Gilbert88/mesos,zmalik/mesos,chhsia0/mesos,neilconway/mesos,kaysoky/mesos,abudnik/mesos,andschwa/mesos,andschwa/mesos,abudnik/mesos,verizonlabs/mesos,abudnik/mesos,neilconway/mesos,gsantovena/mesos,neilconway/mesos,Gilbert88/mesos,zmalik/mesos,andschwa/mesos,chhsia0/mesos,zmalik/mesos,Gilbert88/mesos,andschwa/mesos,asamerh4/mesos,dforsyth/mesos,jpeach/mesos,reneploetz/mesos,asamerh4/mesos,reneploetz/mesos,zmalik/mesos,zmalik/mesos,kaysoky/mesos,dforsyth/mesos,jpeach/mesos,gsantovena/mesos,gsantovena/mesos,andschwa/mesos,verizonlabs/mesos,Gilbert88/mesos,verizonlabs/mesos,reneploetz/mesos,jpeach/mesos,verizonlabs/mesos,jpeach/mesos,chhsia0/mesos,kaysoky/mesos,dforsyth/mesos,neilconway/mesos,jpeach/mesos,dforsyth/mesos,zmalik/mesos,zmalik/mesos,verizonlabs/mesos,reneploetz/mesos,kaysoky/mesos,kaysoky/mesos,Gilbert88/mesos,dforsyth/mesos,kaysoky/mesos,verizonlabs/mesos,dforsyth/mesos,jpeach/mesos,asamerh4/mesos,abudnik/mesos,asamerh4/mesos,neilconway/mesos,abudnik/mesos,chhsia0/mesos,andschwa/mesos,dforsyth/mesos,abudnik/mesos,jpeach/mesos,gsantovena/mesos,verizonlabs/mesos,abudnik/mesos,gsantovena/mesos,neilconway/mesos,Gilbert88/mesos,reneploetz/mesos,reneploetz/mesos,asamerh4/mesos,chhsia0/mesos