sms-pdu-decode family: fix VP-Relative header spacing When VP-Relative is small enough to be reckoned in 5 min or 30 min units, it was printed incorrectly, with a cosmetic defect of one extra space. Fix this bug.

#include <sys/types.h>

u_char *
memset(buf, c, n)
	u_char *buf;
	int c;
	unsigned n;
{
	u_char *p = buf;

	for (; n; n--)
		*p++ = c;
	return buf;
}