Only generate stopnotes if delay actually happens

miditones.c

@@ -1220,12 +1220,12 @@ This is not unlike multiway merging used for tape sorting algoritms in the 50's!
 
          delta_time = earliest_time - timenow;
          if (delta_time) {
-            gen_stopnotes(); /* first check if any tone generators have "stop note" commands pending */
             /* Convert ticks to milliseconds based on the current tempo */
             unsigned long long temp;
             temp = ((unsigned long long) delta_time * tempo) / ticks_per_beat;
             delta_msec = temp / 1000;   // get around LCC compiler bug
             if (delta_msec) {
+              gen_stopnotes(); /* first check if any tone generators have "stop note" commands pending */
               if (loggen)
                  fprintf (logfile, "->Delay %ld msec (%ld ticks)\n", delta_msec, delta_time);
               if (delta_msec > 0x7fff)