Fix FFmpeg vulnerability

See http://www.mail-archive.com/arch-dev-public@archlinux.org/msg24095.html

.SRCINFO

@@ -1,9 +1,9 @@
 # Generated by mksrcinfo v8
-# Sat Dec 26 18:45:00 UTC 2015
+# Wed Jan 13 20:40:41 UTC 2016
 pkgbase = ffmpeg-full
 	pkgdesc = Complete solution to record, convert and stream audio and video (with all options)
 	pkgver = 2.8.4
-	pkgrel = 1
+	pkgrel = 2
 	epoch = 1
 	url = http://ffmpeg.org/
 	arch = i686

PKGBUILD

@@ -11,7 +11,7 @@
 
 pkgname=ffmpeg-full
 pkgver=2.8.4
-pkgrel=1
+pkgrel=2
 epoch=1
 pkgdesc='Complete solution to record, convert and stream audio and video (with all options)'
 arch=('i686' 'x86_64')
@@ -127,7 +127,8 @@ build() {
     --enable-runtime-cpudetect \
     --enable-swresample \
     --enable-vdpau \
-    --enable-version3
+    --enable-version3 \
+    --disable-demuxer='hls' --disable-protocol='concat,hls' # FS#47738
 
   make
   make tools/qt-faststart