Fix some examples/ compile warnings

examples/codepage-conv/duk_codepage_conv.c

@@ -23,7 +23,7 @@ void duk_decode_string_codepage(duk_context *ctx, const char *str, size_t len, u
 	tmplen = 3 * len;  /* max expansion is 1 input byte -> 3 output bytes */
 	if (tmplen / 3 != len) {
 		/* Temporary buffer length wraps. */
-		duk_error(ctx, DUK_ERR_RANGE_ERROR, "input string too long");
+		(void) duk_error(ctx, DUK_ERR_RANGE_ERROR, "input string too long");
 		return;
 	}
 

examples/eventloop/c_eventloop.c

@@ -201,7 +201,7 @@ static void expire_timers(duk_context *ctx) {
 			fflush(stderr);
 #endif
 			if (timer_count >= MAX_TIMERS) {
-				duk_error(ctx, DUK_ERR_RANGE_ERROR, "out of timer slots");
+				(void) duk_error(ctx, DUK_ERR_RANGE_ERROR, "out of timer slots");
 			}
 			memcpy((void *) (timer_list + timer_count), (void *) t, sizeof(ev_timer));
 			timer_count++;
@@ -419,7 +419,7 @@ static int create_timer(duk_context *ctx) {
 	oneshot = duk_require_boolean(ctx, 2);
 
 	if (timer_count >= MAX_TIMERS) {
-		duk_error(ctx, DUK_ERR_RANGE_ERROR, "out of timer slots");
+		(void) duk_error(ctx, DUK_ERR_RANGE_ERROR, "out of timer slots");
 	}
 	idx = timer_count++;
 	timer_id = timer_next_id++;
@@ -574,7 +574,7 @@ static int listen_fd(duk_context *ctx) {
 #endif
 
 	if (poll_count >= MAX_FDS) {
-		duk_error(ctx, DUK_ERR_ERROR, "out of fd slots");
+		(void) duk_error(ctx, DUK_ERR_ERROR, "out of fd slots");
 	}
 
 	pfd = poll_list + poll_count;

examples/eventloop/poll.c

@@ -52,7 +52,7 @@ static int poll_poll(duk_context *ctx) {
 	/*rc = ppoll(fds, n, &ts, NULL);*/
 	rc = poll(fds, n, timeout);
 	if (rc < 0) {
-		duk_error(ctx, DUK_ERR_ERROR, "%s (errno=%d)", strerror(errno), errno);
+		(void) duk_error(ctx, DUK_ERR_ERROR, "%s (errno=%d)", strerror(errno), errno);
 	}
 
 	duk_push_array(ctx);

examples/eventloop/socket.c

@@ -17,7 +17,7 @@
 #include "duktape.h"
 
 #define  ERROR_FROM_ERRNO(ctx)  do { \
-		duk_error(ctx, DUK_ERR_ERROR, "%s (errno=%d)", strerror(errno), errno); \
+		(void) duk_error(ctx, DUK_ERR_ERROR, "%s (errno=%d)", strerror(errno), errno); \
 	} while (0)
 
 static void set_nonblocking(duk_context *ctx, int fd) {
@@ -96,7 +96,7 @@ static int socket_create_server_socket(duk_context *ctx) {
 		break;
 	}
 	if (!addr_inet) {
-		duk_error(ctx, DUK_ERR_ERROR, "cannot resolve %s", addr);
+		(void) duk_error(ctx, DUK_ERR_ERROR, "cannot resolve %s", addr);
 	}
 
 	memset(&sockaddr, 0, sizeof(sockaddr));
@@ -204,7 +204,7 @@ static int socket_connect(duk_context *ctx) {
 		break;
 	}
 	if (!addr_inet) {
-		duk_error(ctx, DUK_ERR_ERROR, "cannot resolve %s", addr);
+		(void) duk_error(ctx, DUK_ERR_ERROR, "cannot resolve %s", addr);
 	}
 
 	memset(&sockaddr, 0, sizeof(sockaddr));