Additional small cleanups.
Additional small cleanups.

* outgoing.c:
  (write_to_connection): avoid a localvar and clarify what is
    happening when we are setting up an ssltunnel. add a comment for
    the normal max_outstanding_requests. reformat some series
    conditions for no_more_writes() invocation, and combine a couple
    if-statements for same.

TommyU/serf,Manouchehri/serf,krime/serf,idomon/serf,Manouchehri/serf,muthusuba/serf,justinweb/serf,idomon/serf,sworda/serf,krime/serf,muthusuba/serf,TommyU/serf,idomon/serf,blueszhangsh/serf,Manouchehri/serf,Manouchehri/serf,krime/serf,liuzongquan/serf,justinweb/serf,sworda/serf,wzugang/serf,wzugang/serf,wzugang/serf,sworda/serf,TommyU/serf,muthusuba/serf,liuzongquan/serf,justinweb/serf,liuzongquan/serf,blueszhangsh/serf,idomon/serf,liuzongquan/serf,sworda/serf,TommyU/serf,krime/serf,muthusuba/serf,blueszhangsh/serf,blueszhangsh/serf,justinweb/serf,wzugang/serf