[PATCH] [ROSE] ROSE_PACLEN definition used a number constant value

Hi,

ROSE_PACLEN was defined by a substraction using a fixed constant value 
of 256 in af_rose.c

#define ROSE_PACLEN (256-ROSE_MIN_LEN)

For more convenience 256 is replaced by AX25_DEF_PACLEN default size 
declared in ax25.h which is the actual AX25 MTU.


signed off by Bernard Pidoux, f6bvp@amsat.org