Don't generate zero-length delays

miditones.c

@@ -257,8 +257,12 @@
 *       them until we see if a "note on" is generated before the next wait.
 *       Thanks to Scott Allen for inspiring me to do this. In the best case we've
 *       seen, this makes the bytestream 21% smaller!
+* 13 November 2017, Earle Philhower, V1.15
+*     - Allow META fields to be larger than 127 bytes.
+*  2 January 2018, Kodest, V1.16
+*     - Don't generate zero-length delays
 */
-#define VERSION "1.14"
+#define VERSION "1.16"
 
 /*--------------------------------------------------------------------------------------------
 
@@ -1224,7 +1228,7 @@ This is not unlike multiway merging used for tape sorting algoritms in the 50's!
             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) {
+            if (delta_msec) { // if time delay didn't round down to zero 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);