Clang warnings are generated on these initializers on 32bit builds. This
update silences the warning and DTRT.
```
cc -DCOMPAT_32BIT -march=i686 -mmmx -msse -msse2 -m32
-L/var/tmp/home/sbruno/bsd/fbsd_head/amd64.amd64/obj-lib32/tmp/usr/lib32
--sysroot=/var/tmp/home/sbruno/bsd/fbsd_head/amd64.amd64/obj-lib32/tmp
-B/var/tmp/home/sbruno/bsd/fbsd_head/amd64.amd64/tmp/usr/bin
-B/var/tmp/home/sbruno/bsd/fbsd_head/amd64.amd64/obj-lib32/tmp/usr/lib32 -pg
-O2 -pipe -DZFS_NO_ACL -I/home/sbruno/bsd/fbsd_head/sbin/mount
-I/home/sbruno/bsd/fbsd_head/sys/cddl/compat/opensolaris
-I/home/sbruno/bsd/fbsd_head/cddl/compat/opensolaris/include
-I/home/sbruno/bsd/fbsd_head/cddl/compat/opensolaris/lib/libumem
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzpool/common
-I/home/sbruno/bsd/fbsd_head/sys/cddl/contrib/opensolaris/common/zfs
-I/home/sbruno/bsd/fbsd_head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
-I/home/sbruno/bsd/fbsd_head/sys/cddl/contrib/opensolaris/uts/common/sys
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/head
-I/home/sbruno/bsd/fbsd_head/sys/cddl/contrib/opensolaris/uts/common
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libnvpair
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libuutil/common
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs/common
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs_core/common
-I/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libcmdutils
-DNEED_SOLARIS_BOOLEAN -g -MD -MF.depend.libzfs_util.po -MTlibzfs_util.po
-std=iso9899:1999 -fstack-protector-strong -Wno-pointer-sign
-Wno-unknown-pragmas -Wno-empty-body -Wno-string-plus-int
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
-Wno-unused-local-typedef -Wno-address-of-packed-member -Wno-switch
-Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses
-Qunused-arguments -c
/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c
-o libzfs_util.po
/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c:826:21:
warning: incompatible pointer to integer conversion assigning to 'uint64_t'
(aka 'unsigned long long') from 'void *' [-Wint-conversion]
zc->zc_nvlist_conf = NULL;
^ ~~~~
/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c:827:20:
warning: incompatible pointer to integer conversion assigning to 'uint64_t'
(aka 'unsigned long long') from 'void *' [-Wint-conversion]
zc->zc_nvlist_src = NULL;
^ ~~~~
/home/sbruno/bsd/fbsd_head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c:828:20:
warning: incompatible pointer to integer conversion assigning to 'uint64_t'
(aka 'unsigned long long') from 'void *' [-Wint-conversion]
zc->zc_nvlist_dst = NULL;
^ ~~~~
3 warnings generated.
```
You can view, comment on, or merge this pull request online at:
https://github.com/openzfs/openzfs/pull/637
-- Commit Summary --
* Update libzfs_util.c
-- File Changes --
M usr/src/lib/libzfs/common/libzfs_util.c (6)
-- Patch Links --
https://github.com/openzfs/openzfs/pull/637.patch
https://github.com/openzfs/openzfs/pull/637.diff
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