Removes unused variable

--- ./src/hammerhead.cc.orig	2008-05-24 12:12:34 +0400

+++ ./src/hammerhead.cc	2008-05-24 12:13:18 +0400

@@ -455,7 +455,7 @@

 #ifdef USE_PTHREAD

     // create the threads

     pthread_attr_t threadattrs;

-    size_t ss = 65536;                        /* 16k? */

+//    size_t ss = 65536;                        /* 16k? */

 #endif

     list<long>::iterator altifit;

     list<HammerTarget>::iterator targetit;