Fixed memory leak evident in MCSTAS simulation.

r1609 | ffr | 2007-03-06 16:09:24 +1100 (Tue, 06 Mar 2007) | 2 lines

polldriv.c

@@ -38,6 +38,7 @@ static int pollHdb(struct __POLLDRIV *self, SConnection *pCon){
         if(!compareHdbValue(old,newVal)){
             UpdateHipadabaPar(node,newVal,pCon);
         }
+        ReleaseHdbValue(&newVal);
         return 1;
     } else {
         return 0;