Follow-up to r1945: Fix compilation with MSVC.
Follow-up to r1945: Fix compilation with MSVC.

* test/test_context.c
  (test_ssltunnel_no_creds_cb): Remove empty array declaration and pass NULL
   instead.

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