[Backport]less:[add] backport patches from upstream

(cherry picked from commit aa2f0ee4187fa3316b6ffe640adca8c7f2e22d8e)

backport-Fix-crash-when-enter-invaid-pattern-in-command.patch

@@ -0,0 +1,29 @@
+From 74c598dd717de5e00db3d4995ee23d01f3510516 Mon Sep 17 00:00:00 2001
+From: Mark Nudelman <markn@greenwoodsoftware.com>
+Date: Sun, 15 Aug 2021 17:38:21 -0700
+Subject: [PATCH] Fix crash when enter invaid pattern in & command.
+
+---
+ search.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/search.c b/search.c
+index f619fbe..4cc6832 100644
+--- a/search.c
++++ b/search.c
+@@ -1908,7 +1908,11 @@ set_filter_pattern(pattern, search_type)
+ 		/* Create a new filter and add it to the filter_infos list. */
+ 		filter = ecalloc(1, sizeof(struct pattern_info));
+ 		init_pattern(filter);
+-		set_pattern(filter, pattern, search_type, 1);
++		if (set_pattern(filter, pattern, search_type, 1) < 0)
++		{
++			free(filter);
++			return;
++		}
+ 		filter->next = filter_infos;
+ 		filter_infos = filter;
+ 	}
+-- 
+2.27.0
+

backport-Fix-memory-leak-when-using-corrupt-lesshst-file.patch

@@ -0,0 +1,26 @@
+From 1974e5f8cd628e5fc1075883f3eba3e5390860d3 Mon Sep 17 00:00:00 2001
+From: Mark Nudelman <markn@greenwoodsoftware.com>
+Date: Sat, 9 Oct 2021 18:15:58 -0700
+Subject: [PATCH] Fix memory leak when using corrupt lesshst file.
+
+---
+ mark.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/mark.c b/mark.c
+index cbb316f..6506683 100644
+--- a/mark.c
++++ b/mark.c
+@@ -59,6 +59,9 @@ cmark(m, ifile, pos, ln)
+ 	m->m_ifile = ifile;
+ 	m->m_scrpos.pos = pos;
+ 	m->m_scrpos.ln = ln;
++	if (m->m_filename != NULL)
++		/* Normally should not happen but a corrupt lesshst file can do it. */
++		free(m->m_filename);
+ 	m->m_filename = NULL;
+ }
+ 
+-- 
+2.27.0
+

less.spec

@@ -1,11 +1,13 @@
 Name:		less
 Version:	590
-Release:        2
+Release:        3
 Summary:	Less is a pager that displays text files.
 License:	GPLv3+ or BSD
 URL:		http://www.greenwoodsoftware.com/less
 Source0:	http://www.greenwoodsoftware.com/less/%{name}-%{version}.tar.gz
 Patch0:         less-394-time.patch
+Patch6000:      backport-Fix-memory-leak-when-using-corrupt-lesshst-file.patch
+Patch6001:      backport-Fix-crash-when-enter-invaid-pattern-in-command.patch
 
 BuildRequires:	gcc make ncurses-devel autoconf automake libtool
 
@@ -44,6 +46,14 @@ autoreconf -ivf
 %{_mandir}/man1/*
 
 %changelog
+* Fri Dec 9 2022 Eibz-Chan <chenbingzhao@huawei.com> - 590-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:[add] backport patches from upstream
+	Fix-memory-leak-when-using-corrupt-lesshst-file.patch
+	Fix-crash-when-enter-invaid-pattern-in-command.patch
+
 * Thu Oct 13 2022 fuanan <fuanan3@h-partners.com> - 590-2
 - DESC:fix the changelog exception macro