fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.

/*
 * The struct defined below captures the results of a stat (actually xlstat)
 * operation on the target; it is a host (aka local) struct, with host byte
 * ordering, alignment and data types.
 */

struct stat_info {
	u8	type;
	u8	flags;
	int	inode;
	u32	size;     // size of data space occupied by object
	u32	space;    // size of physical data space occupied by object
	u32	location;
	u8	block;
	u16	sequence;
	u16	updates;
};