silence hpux compiler warnings

lib/samples/nsprobe.c

@@ -291,7 +291,7 @@ make_querymessage(dns_message_t *message, dns_name_t *qname0,
 static inline void
 increment_entry(unsigned long *entryp) {
 	(*entryp)++;
-	INSIST(*entryp != 0);	/* check overflow */
+	INSIST(*entryp != 0U);	/* check overflow */
 }
 
 static void
@@ -390,57 +390,57 @@ update_stat(struct probe_trans *trans) {
 	}
 
 	/* Update per domain statistics */
-	if (local_stat.ignore > 0) {
+	if (local_stat.ignore > 0U) {
 		if (verbose_level > 0)
 			printf("%s:ignore\n", trans->domain);
 		increment_entry(&domain_stat.ignore);
 		err_count++;
 	}
-	if (local_stat.nxdomain > 0) {
+	if (local_stat.nxdomain > 0U) {
 		if (verbose_level > 0)
 			printf("%s:nxdomain\n", trans->domain);
 		increment_entry(&domain_stat.nxdomain);
 		err_count++;
 	}
-	if (local_stat.othererr > 0) {
+	if (local_stat.othererr > 0U) {
 		if (verbose_level > 0)
 			printf("%s:othererr\n", trans->domain);
 		increment_entry(&domain_stat.othererr);
 		err_count++;
 	}
-	if (local_stat.multiplesoa > 0) {
+	if (local_stat.multiplesoa > 0U) {
 		if (verbose_level > 0)
 			printf("%s:multiplesoa\n", trans->domain);
 		increment_entry(&domain_stat.multiplesoa);
 		err_count++;
 	}
-	if (local_stat.multiplecname > 0) {
+	if (local_stat.multiplecname > 0U) {
 		if (verbose_level > 0)
 			printf("%s:multiplecname\n", trans->domain);
 		increment_entry(&domain_stat.multiplecname);
 		err_count++;
 	}
-	if (local_stat.brokenanswer > 0) {
+	if (local_stat.brokenanswer > 0U) {
 		if (verbose_level > 0)
 			printf("%s:brokenanswer\n", trans->domain);
 		increment_entry(&domain_stat.brokenanswer);
 		err_count++;
 	}
-	if (local_stat.lame > 0) {
+	if (local_stat.lame > 0U) {
 		if (verbose_level > 0)
 			printf("%s:lame\n", trans->domain);
 		increment_entry(&domain_stat.lame);
 		err_count++;
 	}
 
-	if (err_count > 1)
+	if (err_count > 1U)
 		increment_entry(&multiple_error_domains);
 
 	/*
 	 * We regard the domain as valid if and only if no authoritative server
 	 * has a problem and at least one server is known to be valid.
 	 */
-	if (local_stat.valid > 0 && err_count == 0) {
+	if (local_stat.valid > 0U && err_count == 0U) {
 		if (verbose_level > 1)
 			printf("%s:valid\n", trans->domain);
 		increment_entry(&domain_stat.valid);
@@ -450,7 +450,7 @@ update_stat(struct probe_trans *trans) {
 	 * If the domain has no available server or all servers have the
 	 * 'unknown' result, the domain's result is also regarded as unknown.
 	 */
-	if (local_stat.valid == 0 && err_count == 0) {
+	if (local_stat.valid == 0U && err_count == 0U) {
 		if (verbose_level > 1)
 			printf("%s:unknown\n", trans->domain);
 		increment_entry(&domain_stat.unknown);
@@ -1216,5 +1216,5 @@ main(int argc, char *argv[]) {
 	isc_app_ctxfinish(actx);
 	ctxs_destroy(&mctx, &actx, &taskmgr, &socketmgr, &timermgr);
 
-	exit(0);
+	return (0);
 }

lib/samples/resolve.c

@@ -412,5 +412,5 @@ main(int argc, char *argv[]) {
 		isc_mem_destroy(&keymctx);
 	dns_lib_shutdown();
 
-	exit(0);
+	return (0);
 }

lib/samples/sample-async.c

@@ -398,5 +398,5 @@ main(int argc, char *argv[]) {
 	isc_app_ctxfinish(query_actx);
 	ctxs_destroy(&mctx, &query_actx, &taskmgr, &socketmgr, &timermgr);
 
-	exit(0);
+	return (0);
 }

lib/samples/sample-gai.c

@@ -73,5 +73,5 @@ main(int argc, char *argv[]) {
 	do_gai(AF_INET6, argv[1]);
 	do_gai(AF_UNSPEC, argv[1]);
 
-	exit(0);
+	return (0);
 }

lib/samples/sample-request.c

@@ -261,5 +261,5 @@ main(int argc, char *argv[]) {
 	dns_client_destroy(&client);
 	dns_lib_shutdown();
 
-	exit(0);
+	return (0);
 }

lib/samples/sample-update.c

@@ -305,7 +305,7 @@ main(int argc, char *argv[]) {
 	dns_client_destroy(&client);
 	dns_lib_shutdown();
 
-	exit(0);
+	return (0);
 }
 
 /*