From: Tim Kientzle <kientzle@gmail.com>
Date: Tue, 10 Jan 2012 04:49:19 +0000 (-0500)
Subject: Allow archive_*_free(NULL) to succeed.
X-Git-Tag: v3.0.4~2^2~206
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29f8ac3ead730c9d392f919929cb75d9633da20e;p=thirdparty%2Flibarchive.git

Allow archive_*_free(NULL) to succeed.

SVN-Revision: 4106
---

diff --git a/libarchive/archive_virtual.c b/libarchive/archive_virtual.c
index 752dc17c2..83089f27f 100644
--- a/libarchive/archive_virtual.c
+++ b/libarchive/archive_virtual.c
@@ -69,6 +69,8 @@ archive_read_close(struct archive *a)
 int
 archive_write_free(struct archive *a)
 {
+	if (a == NULL)
+		return (ARCHIVE_OK);
 	return ((a->vtable->archive_free)(a));
 }
 
@@ -77,13 +79,15 @@ archive_write_free(struct archive *a)
 int
 archive_write_finish(struct archive *a)
 {
-	return ((a->vtable->archive_free)(a));
+	return archive_write_free(a);
 }
 #endif
 
 int
 archive_read_free(struct archive *a)
 {
+	if (a == NULL)
+		return (ARCHIVE_OK);
 	return ((a->vtable->archive_free)(a));
 }
 
@@ -92,7 +96,7 @@ archive_read_free(struct archive *a)
 int
 archive_read_finish(struct archive *a)
 {
-	return ((a->vtable->archive_free)(a));
+	return archive_read_free(a);
 }
 #endif