[Midnightbsd-cvs] src: util.c: check calls to calloc and strdup in case memory allocation

[laffer1 at midnightbsd.org]

Log Message:
-----------
check calls to calloc and strdup in case memory allocation fails

Modified Files:
--------------
    src/lib/libmport:
        util.c (r1.22 -> r1.23)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/util.c?r1=1.22&r2=1.23)