changes suggested by -Wextra

lib/airplay_video.c

@@ -892,7 +892,7 @@ char *adjust_yt_condensed_playlist(const char *media_playlist) {
     new_pos += len;
     old_pos += len;
 
-    assert(byte_count == new_len);
+    assert(byte_count == (int) new_len);
 
     free (prefix);
     free (base_uri);

lib/logger.c

@@ -104,7 +104,7 @@ logger_log(logger_t *logger, int level, const char *fmt, ...)
     va_start(ap, fmt);    
     int message_len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
     va_end(ap);
-    if (message_len >= sizeof(buffer)) {
+    if (message_len >=  (int) sizeof(buffer)) {
         snprintf(err_buf, sizeof(err_buf), err_fmt, message_len, (int) sizeof(buffer) -1);
     }
     MUTEX_LOCK(logger->cb_mutex);

lib/pairing.c

@@ -198,7 +198,7 @@ pairing_session_get_public_key(pairing_session_t *session, unsigned char ecdh_ke
 int
 pairing_session_make_nonce(pairing_session_t *session, uint64_t *local_time, const char *client_data, unsigned char *nonce, int len)  {
     unsigned char hash[SHA512_DIGEST_LENGTH];
-    if (len > sizeof(hash)) {
+    if (len > (int) sizeof(hash)) {
       return -1;
     }
     if (!client_data || !local_time || !session || !nonce || len <= 0) {

lib/raop_buffer.c

@@ -211,7 +211,7 @@ raop_buffer_enqueue(raop_buffer_t *raop_buffer, unsigned char *data, unsigned sh
     entry->payload_data = malloc(payload_size);
     int decrypt_ret = raop_buffer_decrypt(raop_buffer, data, entry->payload_data, payload_size, &entry->payload_size);
     assert(decrypt_ret >= 0);
-    assert(entry->payload_size <= payload_size);
+    assert((int) entry->payload_size <= payload_size);
 
     /* Update the raop_buffer seqnums */
     if (raop_buffer->is_empty) {

lib/raop_handlers.h

@@ -271,8 +271,6 @@ raop_handler_pairpinstart(raop_conn_t *conn,
          raop->callbacks.display_pin(raop->callbacks.cls, pin);
     }
     logger_log(raop->logger, LOGGER_INFO, "*** CLIENT MUST NOW ENTER PIN = \"%s\" AS AIRPLAY PASSWORD", pin);
-    *response_data = NULL;
-    response_datalen = 0;
 }
 
 static void
@@ -320,10 +318,8 @@ raop_handler_pairsetup_pin(raop_conn_t *conn,
         plist_get_string_val(req_method_node, &method);
         if (strncmp(method, "pin", strlen (method))) {
             logger_log(raop->logger, LOGGER_ERR, "error, required method is \"pin\", client requested \"%s\"", method);
-            *response_data = NULL;
-            response_datalen = 0;
-	    free (method);
-	    plist_free (req_root_node);
+            free (method);
+            plist_free (req_root_node);
             return;
         }
         plist_mem_free(method);
@@ -908,7 +904,7 @@ raop_handler_setup(raop_conn_t *conn,
         conn->raop_rtp_mirror = NULL;
         char remote[40] = { 0 };
         int len = utils_ipaddress_to_string(conn->remotelen, conn->remote, conn->zone_id, remote, (int) sizeof(remote));
-        if (!len || len > sizeof(remote)) {
+        if (!len || len > (int) sizeof(remote)) {
             char *str = utils_data_to_string(conn->remote, conn->remotelen, 16);
             logger_log(raop->logger, LOGGER_ERR, "failed to extract valid client ip address:\n"
                        "*** UxPlay will be unable to send communications to client.\n"

lib/raop_rtp_mirror.c

@@ -371,7 +371,7 @@ raop_rtp_mirror_thread(void *arg)
                 readstart = 0;
             }
 
-            while (readstart < payload_size) {
+            while ((int) readstart < payload_size) {
                 // Payload data
                 unsigned char *pos = payload + readstart;
                 ret = recv(stream_fd, CAST pos, payload_size - readstart, 0);

lib/srp.c

@@ -526,7 +526,7 @@ static int hash_session_key( SRP_HashAlgorithm alg, const BIGNUM * n, unsigned c
 static void calculate_M( SRP_HashAlgorithm alg, NGConstant *ng, unsigned char * dest, const char * I, const BIGNUM * s,
                          const BIGNUM * A, const BIGNUM * B, const unsigned char * K )
 {
-  unsigned char H_N[ SHA512_DIGEST_LENGTH ] = {0};
+    unsigned char H_N[ SHA512_DIGEST_LENGTH ] = {0};
     unsigned char H_g[ SHA512_DIGEST_LENGTH ] = {0};
     unsigned char H_I[ SHA512_DIGEST_LENGTH ] = {0};
     unsigned char H_xor[ SHA512_DIGEST_LENGTH ] = {0};

lib/utils.c

@@ -211,7 +211,7 @@ char *utils_data_to_string(const unsigned char *data, int datalen, int chars_per
     n--;
     p++;
     assert(p == &(str[len]));
-    assert(len == strlen(str));
+    assert(len == (int) strlen(str));
     return str;
 }