[Midnightbsd-cvs] src: lib/libmport: Fix a bug in update_primitive where a free'd var was

[laffer1 at midnightbsd.org]

Log Message:
-----------
Fix a bug in update_primitive where a free'd var was strdup'd.  

Assign NULL to several pointers.  While it shouldn't matter, if something weird happens it will make it easier to track down.

Modified Files:
--------------
    src/lib/libmport:
        instance.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/instance.c?r1=1.5&r2=1.6)
        pkgmeta.c (r1.6 -> r1.7)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/pkgmeta.c?r1=1.6&r2=1.7)
        plist.c (r1.8 -> r1.9)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/plist.c?r1=1.8&r2=1.9)
        update_primative.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/update_primative.c?r1=1.3&r2=1.4)
        util.c (r1.15 -> r1.16)
        (http://cvsweb.midnightbsd.org/src/lib/libmport/util.c?r1=1.15&r2=1.16)