Fixed Bug #66987 Memory corruption in fileinfo ext (bigendian)

On little endian:
	map->p == php_magic_database
	map->magic[i] = pointer into the map

	map->p == NULL
	map->magic[i] = pointer to allocated memory

On big endian (ppc64, s390x, ...):
	map->p != php_magic_database and map->p != NULL
        map->magic[i] = pointer into a copy of the map

Trying to efree pointer in the later cause memory corruption
Thanks to dkatulek / Red Hat for the report.
NEWS
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  NEWS
  Fixed Bug #66987 Memory corruption in fileinfo ext (bigendian)
NEWS