update libotr to fix security issue

libotr/PKGBUILD

 # maintainer: Neophytos Kolokotronis <tetris4@gmail.com>
 
 pkgname=libotr
-pkgver=4.0.0
-pkgrel=2
-pkgdesc='Off-the-Record Messaging Library and Toolkit.'
-url='http://www.cypherpunks.ca/otr/'
+pkgver=4.1.1
+pkgrel=1
+pkgdesc='Off-the-Record Messaging Library and Toolkit'
+url='http://otr.cypherpunks.ca/'
 license=('GPL' 'LGPL')
 arch=('x86_64')
 depends=('libgcrypt')
-source=("http://www.cypherpunks.ca/otr/${pkgname}-${pkgver}.tar.gz"
-        'kopete.patch')
-sha1sums=('8865e9011b8674290837afcf7caf90c492ae09cc'
-          '55988c4f11b6852491a758ea7a5b7071e8959c55')
-
-prepare() {
-	cd "${srcdir}/${pkgname}-${pkgver}"
-	patch -p1 -i ../kopete.patch # FS#38326
-}
+validpgpkeys=('576979E7D0CAB38C7AA3DDBDDED64EBB2BA87C5C')
+source=("http://otr.cypherpunks.ca/${pkgname}-${pkgver}.tar.gz"{,.asc})
+sha1sums=('3894b82a6c307ad011681ad342d69b18344933ae'
+          'SKIP')
 
 build() {
-	cd "$srcdir/$pkgname-$pkgver"
+	cd "${srcdir}/${pkgname}-${pkgver}"
 	./configure --prefix=/usr --mandir=/usr/share/man
 	make
 }
 
 package() {
-	cd "$srcdir/$pkgname-$pkgver"
-	make DESTDIR="$pkgdir" install
+	cd "${srcdir}/${pkgname}-${pkgver}"
+	make DESTDIR="${pkgdir}" install
 }