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patch cleanup

@@ -1,11 +1,11 @@
 '\" te
 .\" Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved.
 .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
 .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or  See the License for the specific language governing permissions and limitations under the License.
 .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
+.TH NVLIST_ALLOC 3NVPAIR "Feb 15, 2016"
 nvlist_alloc, nvlist_free, nvlist_size, nvlist_pack, nvlist_unpack, nvlist_dup,
 nvlist_merge, nvlist_xalloc, nvlist_xpack, nvlist_xunpack, nvlist_xdup,
 nvlist_lookup_nv_alloc, nv_alloc_init, nv_alloc_reset, nv_alloc_fini \- manage
 a name-value pair list

@@ -241,11 +241,12 @@
 The \fBnvlist_xalloc()\fR function is identical to \fBnvlist_alloc()\fR except
 that \fBnvlist_xalloc()\fR can use a different allocator, as described in the
 Pluggable Allocators section.
-The \fBnvlist_free()\fR function frees a name-value pair list.
+The \fBnvlist_free()\fR function frees a name-value pair list. If \fInvl\fR
+is a null pointer, no action occurs.
 The \fBnvlist_size()\fR function returns the minimum size of a contiguous
 buffer large enough to pack \fInvl\fR. The \fIencoding\fR parameter specifies
 the method of encoding when packing \fInvl\fR. Supported encoding methods are: