ss_app: Fix compiler warning

svn path=/trunk/boinc/; revision=17221

checkin_notes

@@ -1491,6 +1491,7 @@ Charlie 11 Feb 2009
         not visible when it is running so there is no reason to have an icon.
         So restore the previous permissions settings (non-writable).
     - ss_app: Remove code which adds a Mac icon.
+    - ss_app: Fix compiler warning.
 
     client/
         check_security.cpp

clientscr/ss_app.cpp

@@ -217,7 +217,7 @@ void show_project(unsigned int index, float alpha) {
 
 void show_jobs(unsigned int index, double alpha) {
     float x=.1, y=.7;
-    int nfound = 0;
+    unsigned int nfound = 0;
     unsigned int i;
     for (i=0; i<cc_state.results.size(); i++) {
         RESULT* r = cc_state.results[i];