socket: Use const void* instead of void* in signature of socket_send()

Author: nikias

include/libimobiledevice-glue/socket.h

@@ -63,7 +63,7 @@ LIMD_GLUE_API int socket_close(int fd);
 LIMD_GLUE_API int socket_receive(int fd, void *data, size_t length);
 LIMD_GLUE_API int socket_peek(int fd, void *data, size_t length);
 LIMD_GLUE_API int socket_receive_timeout(int fd, void *data, size_t length, int flags, unsigned int timeout);
-LIMD_GLUE_API int socket_send(int fd, void *data, size_t length);
+LIMD_GLUE_API int socket_send(int fd, const void *data, size_t length);
 
 LIMD_GLUE_API int socket_get_socket_port(int fd, uint16_t *port);
 

src/socket.c

@@ -1413,7 +1413,7 @@ int socket_receive_timeout(int fd, void *data, size_t length, int flags, unsigne
 	return result;
 }
 
-int socket_send(int fd, void *data, size_t length)
+int socket_send(int fd, const void *data, size_t length)
 {
 	int flags = 0;
 	int res = socket_check_fd(fd, FDM_WRITE, SEND_TIMEOUT);