Compiler warning fixes.

src/dnsmasq.c

@@ -1214,30 +1214,39 @@ static void fatal_event(struct event_desc *ev, char *msg)
     case EVENT_FORK_ERR:
       die(_("cannot fork into background: %s"), NULL, EC_MISC);
 
+      /* fall through */
     case EVENT_PIPE_ERR:
       die(_("failed to create helper: %s"), NULL, EC_MISC);
 
+      /* fall through */
     case EVENT_CAP_ERR:
       die(_("setting capabilities failed: %s"), NULL, EC_MISC);
 
+      /* fall through */
     case EVENT_USER_ERR:
       die(_("failed to change user-id to %s: %s"), msg, EC_MISC);
 
+      /* fall through */
     case EVENT_GROUP_ERR:
       die(_("failed to change group-id to %s: %s"), msg, EC_MISC);
 
+      /* fall through */
     case EVENT_PIDFILE:
       die(_("failed to open pidfile %s: %s"), msg, EC_FILE);
 
+      /* fall through */
     case EVENT_LOG_ERR:
       die(_("cannot open log %s: %s"), msg, EC_FILE);
 
+      /* fall through */
     case EVENT_LUA_ERR:
       die(_("failed to load Lua script: %s"), msg, EC_MISC);
 
+      /* fall through */
     case EVENT_TFTP_ERR:
       die(_("TFTP directory %s inaccessible: %s"), msg, EC_FILE);
 
+      /* fall through */
     case EVENT_TIME_ERR:
       die(_("cannot create timestamp file %s: %s" ), msg, EC_BADCONF);
     }

src/option.c

@@ -1163,7 +1163,7 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 	    case 'd':
 	    case 'D':
 	      fac *= 24;
-	      /* fall though */
+	      /* fall through */
 	    case 'h':
 	    case 'H':
 	      fac *= 60;
@@ -2970,7 +2970,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		      case 'd':
 		      case 'D':
 			fac *= 24;
-			/* fall though */
+			/* fall through */
 		      case 'h':
 		      case 'H':
 			fac *= 60;