small chansges for coverity

Engine/csound_orc_expressions.c

@@ -191,6 +191,7 @@ static TREE * create_goto_token(CSOUND *csound, char * booleanVar,
       break;
     case THEN_TOKEN:
       if (csound->inZero) goto icase;
+      /* fall through */
     case KTHEN_TOKEN:
       strncpy(op, "cngoto", 8);
       break;

Engine/musmon.c

@@ -1223,6 +1223,7 @@ int insert_score_event_at_sample(CSOUND *csound, EVTBLK *evt, int64_t time_ofs)
     case 'a':
       if (UNLIKELY(evt->pcnt < 3))
         goto pfld_err;
+      /* fall through */
     case 'd':
     cont:
       /* calculate actual start time in seconds and k-periods */
@@ -1250,7 +1251,7 @@ int insert_score_event_at_sample(CSOUND *csound, EVTBLK *evt, int64_t time_ofs)
       /* calculate the length in beats */
       if (evt->p3orig > FL(0.0))
         evt->p3orig = (MYFLT) ((double) evt->p3orig / st->ibeatTime);
-      /* fall through required */
+      /* fall through */
     case 'q':                         /* mute instrument */
       /* check for a valid instrument number or name */
       if (evt->opcod=='d') {
@@ -1281,6 +1282,7 @@ int insert_score_event_at_sample(CSOUND *csound, EVTBLK *evt, int64_t time_ofs)
     case 'a':                         /* advance score time */
       /* calculate the length in beats */
       evt->p3orig = (MYFLT) ((double) evt->p3orig *csound->esr/ st->ibeatTime);
+      /* fall through */
     case 'f':                         /* function table */
       break;
     case 'e':                         /* end of score, */

Opcodes/socksend.c

@@ -477,6 +477,7 @@ static int osc_send2_init(CSOUND *csound, OSCSEND2 *p)
       case 'l':
       case 'h': /* OSC-accepted type name for 64bit int */
         p->type->data[i] = 'h';
+        /* fall through */
       case 'd':
         bsize += 8;
         iarg++;