fix memory leak (but only on malloc path)

r2428 | dcl | 2008-04-14 09:47:50 +1000 (Mon, 14 Apr 2008) | 2 lines

nxscript.c

@@ -737,6 +737,8 @@ static void putSlab(SConnection *pCon, SicsInterp *pSics, pNXScript self,
         if(status == NX_OK){
           written = 1;
         }
+        if (argc > 6)
+          free(histData);
       }
     }