Change zmodem_recv_file_frame() function signature to go with previous commit.

src/sbbs3/zmodem.h

@@ -339,7 +339,7 @@ BOOL		zmodem_send_file(zmodem_t*, char* name, FILE* fp, BOOL request_init, time_
 int			zmodem_recv_files(zmodem_t* zm, const char* download_dir, uint64_t* bytes_received);
 int			zmodem_recv_init(zmodem_t* zm);
 unsigned	zmodem_recv_file_data(zmodem_t*, FILE*, int64_t offset);
-int			zmodem_recv_file_frame(zmodem_t* zm, FILE* fp);
+int			zmodem_recv_file_frame(zmodem_t* zm, FILE* fp, int* type);
 int			zmodem_recv_header_and_check(zmodem_t* zm);
 #endif