Don't cast void to void.

src/lib/commands/expl.c

@@ -215,7 +215,7 @@ explore(void)
     }
 
     if (!player->god && !player->owner && sect.sct_type != SCT_SANCT) {
-	(void)takeover(&sect, player->cnum);
+	takeover(&sect, player->cnum);
 	justtook = 1;
 	sect.sct_oldown = own;
 	sect.sct_work = work;

src/lib/commands/new.c

@@ -106,9 +106,9 @@ new(void)
     } else {
 	(void)time(&now);
 #if !defined(_WIN32)
-	(void)srandom(now);
+	srandom(now);
 #else
-	(void)srand(now);
+	srand(now);
 #endif
 	for (i = 0; i < 300 && !player->aborted; i++) {
 	    /* Both x and y should be either odd or even */

src/lib/gen/ioqueue.c

@@ -95,9 +95,9 @@ ioq_drain(struct ioqueue *ioq)
 
     while ((qp = ioq->list.queue.q_forw) != &ioq->list.queue) {
 	io = (struct io *)qp;
-	(void)emp_remque(&io->queue);
-	(void)free((s_char *)io->data);
-	(void)free((s_char *)io);
+	emp_remque(&io->queue);
+	free(io->data);
+	free(io);
     }
 
     ioq->cc = 0;
@@ -350,17 +350,17 @@ removecc(struct ioqueue *ioq, register int cc)
 	there = io->nbytes - io->offset;
 	if (there < 0) {
 	    /* error */
-	    (void)emp_remque(&io->queue);
-	    (void)free((s_char *)io);
+	    emp_remque(&io->queue);
+	    free(io);
 	    continue;
 	}
 	if (remain >= there) {
 	    /* not enough or exact; free entry */
 	    nbytes += there;
 	    remain -= there;
-	    (void)emp_remque(&io->queue);
-	    (void)free(io->data);
-	    (void)free((s_char *)io);
+	    emp_remque(&io->queue);
+	    free(io->data);
+	    free(io);
 	} else {
 	    /* too much; increment offset */
 	    io->offset += remain;

src/lib/player/login.c

@@ -100,7 +100,7 @@ player_login(void *ud)
     }
     player->state = PS_SHUTDOWN;
     if (!io_eof(player->iop)) {
-	(void)pr_player(player, C_EXIT, "so long...\n");
+	pr_player(player, C_EXIT, "so long...\n");
 	io_noblocking(player->iop, 0);
 	while (io_output(player->iop, IO_WAIT) > 0) ;
     }