cmDspPreset.c:Fixed uninitialized variable 'pp' in _cmDspPresetCount().

dsp/cmDspPreset.c

   if((gp = _cmDspPresetGroupFromIndex(p,groupIdx)) == NULL )
     return 0;
 
+  pp = gp->list;
   for(; pp!=NULL; pp=pp->link)
     ++cnt;