Remove redundant semicolons after the closing braces of functions

(cherry picked from commit 1a19ce39db)

bin/dig/readline.h

@@ -51,7 +51,7 @@ readline(const char *prompt) {
 		return NULL;
 	}
 	return buf;
-};
+}
 
 #define add_history(line)
 

lib/isc/netmgr/proxystream.c

@@ -218,7 +218,7 @@ proxystream_on_header_data_cb(const isc_result_t result,
 		proxystream_failed_read_cb(sock, result);
 		break;
 	};
-};
+}
 
 static void
 proxystream_handle_incoming_header_data(isc_nmsocket_t *sock,

lib/isc/netmgr/proxyudp.c

@@ -200,7 +200,7 @@ proxyudp_on_header_data_cb(const isc_result_t result,
 
 unexpected:
 	isc__nm_proxyudp_failed_read_cb(proxysock, ISC_R_UNEXPECTED, false);
-};
+}
 
 static isc_nmsocket_t *
 proxyudp_sock_new(isc__networker_t *worker, const isc_nmsocket_type_t type,

lib/ns/client.c

@@ -272,7 +272,7 @@ ns_client_extendederror(ns_client_t *client, uint16_t code, const char *text) {
 	client->ede->length = len;
 	client->ede->value = isc_mem_get(client->manager->mctx, len);
 	memmove(client->ede->value, ede, len);
-};
+}
 
 static void
 ns_client_endrequest(ns_client_t *client) {