!13 do malloc trim after load policy

From: @HuaxinLuGitee
Reviewed-by: @zhujianwei001
Signed-off-by: @zhujianwei001

do-malloc-trim-after-load-policy.patch

@@ -0,0 +1,35 @@
+From 3d5049f849226d54070651fdf96019d263c38363 Mon Sep 17 00:00:00 2001
+From: luhuaxin <1539327763@qq.com>
+Date: Wed, 2 Jun 2021 16:24:47 +0800
+Subject: [PATCH] do malloc trim after load policy
+
+---
+ libselinux/src/load_policy.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/libselinux/src/load_policy.c b/libselinux/src/load_policy.c
+index 2aea826..ace898c 100644
+--- a/libselinux/src/load_policy.c
++++ b/libselinux/src/load_policy.c
+@@ -18,6 +18,7 @@
+ #include <dlfcn.h>
+ #include "policy.h"
+ #include <limits.h>
++#include <malloc.h>
+ 
+ #ifndef MNT_DETACH
+ #define MNT_DETACH 2
+@@ -365,7 +366,9 @@ int selinux_init_load_policy(int *enforce)
+ 	}
+ 
+ 	/* Load the policy. */
+-	return selinux_mkload_policy(0);
++	rc = selinux_mkload_policy(0);
++	malloc_trim(0);
++	return rc;
+ 
+       noload:
+ 	/*
+-- 
+1.8.3.1
+

libselinux.spec

@@ -3,13 +3,14 @@
 
 Name:    libselinux
 Version: 3.1
-Release: 2
+Release: 3
 License: Public Domain
 Summary: SELinux library and simple utilities
 Url:     https://github.com/SELinuxProject/selinux/wiki
 Source0: https://github.com/SELinuxProject/selinux/releases/download/20200710/libselinux-3.1.tar.gz
 
 #Patch0:  libselinux-Use-Python-distutils-to-install-SELinux-p.patch
+Patch1: do-malloc-trim-after-load-policy.patch
 
 BuildRequires: gcc python3-devel systemd swig pcre2-devel xz-devel
 BuildRequires: ruby-devel libsepol-static
@@ -128,6 +129,9 @@ mv %{buildroot}%{_sbindir}/getconlist %{buildroot}%{_sbindir}/selinuxconlist
 %{_mandir}/ru/man8/*
 
 %changelog
+* Wed Jul 2 2021 luhuaxin <1539327763@qq.com> - 3.1-3
+- do malloc trim after load policy
+
 * Tue Oct 27 2020 gaoyusong <gaoyusong1@huawei.com> - 3.1-2
 - delete BuildRequires python2-devel