Fixed some type warnings.

src/twc-bootstrap.c

@@ -68,11 +68,11 @@ int
 twc_bootstrap_tox(Tox *tox, const char *address, uint16_t port,
                   const char *public_key)
 {
-    char binary_key[TOX_FRIEND_ADDRESS_SIZE];
+    uint8_t binary_key[TOX_FRIEND_ADDRESS_SIZE];
     twc_hex2bin(public_key, TOX_FRIEND_ADDRESS_SIZE, binary_key);
 
     int result = tox_bootstrap_from_address(tox, address, port,
-                                            (uint8_t *)binary_key);
+                                            binary_key);
 
     return result;
 }

src/twc-commands.c

@@ -294,7 +294,7 @@ twc_cmd_friend(void *data, struct t_gui_buffer *buffer,
             return WEECHAT_RC_OK;
         }
 
-        char address[TOX_FRIEND_ADDRESS_SIZE];
+        uint8_t address[TOX_FRIEND_ADDRESS_SIZE];
         twc_hex2bin(hex_id, TOX_FRIEND_ADDRESS_SIZE, address);
 
         if (force)