* sync libevent with main arch

libevent/0001-Warn-if-forked-from-the-event-loop-during-event_reinit.patch

@@ -0,0 +1,31 @@
+From 497ef904d544ac51de43934549dbeccce8e6e8f8 Mon Sep 17 00:00:00 2001
+From: Azat Khuzhin <azat@libevent.org>
+Date: Mon, 1 Jul 2019 23:54:02 +0300
+Subject: [PATCH] Warn if forked from the event loop during event_reinit()
+
+Calling fork() from the event loop is not a great idea, since at least
+it shares some internal pipes (for handling signals) before
+event_reinit() call
+
+Closes: #833
+---
+ event.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/event.c b/event.c
+index fa4f2802e..aa6c6fba3 100644
+--- a/event.c
++++ b/event.c
+@@ -1003,6 +1003,12 @@ event_reinit(struct event_base *base)
+ 
+ 	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
+ 
++	if (base->running_loop) {
++		event_warnx("%s: forked from the event_loop.", __func__);
++		res = -1;
++		goto done;
++	}
++
+ 	evsel = base->evsel;
+ 
+ 	/* check if this event mechanism requires reinit on the backend */

libevent/PKGBUILD

@@ -4,19 +4,26 @@
 
 pkgname=libevent
 pkgver=2.1.11
-pkgrel=1
+pkgrel=2
 pkgdesc="An event notification library"
 arch=(x86_64 powerpc64le)
 url="https://libevent.org/"
 license=('BSD')
 depends=('openssl')
 optdepends=('python2: to use event_rpcgen.py')
-source=(https://github.com/libevent/libevent/releases/download/release-$pkgver-stable/$pkgname-$pkgver-stable.tar.gz{,.asc})
+source=(https://github.com/libevent/libevent/releases/download/release-$pkgver-stable/$pkgname-$pkgver-stable.tar.gz{,.asc}
+        0001-Warn-if-forked-from-the-event-loop-during-event_reinit.patch)
 sha256sums=('a65bac6202ea8c5609fd5c7e480e6d25de467ea1917c08290c521752f147283d'
-            'SKIP')
+            'SKIP'
+            '436e56c74c0af0b70c43eaae6bd32b760601d2d5fa98b8d2d026ffad18474e13')
 validpgpkeys=('B35BF85BF19489D04E28C33C21194EBB165733EA'
               '9E3AC83A27974B84D1B3401DB86086848EF8686D')
 
+prepare() {
+  cd ${pkgname}-${pkgver}-stable
+  patch -Np1 -R < ../0001-Warn-if-forked-from-the-event-loop-during-event_reinit.patch
+}
+
 build() {
   cd ${pkgname}-${pkgver}-stable
   ./autogen.sh