Patch Baikal to fix issue with Thunderbird address book

See

* https://github.com/sabre-io/Baikal/issues/819
* https://github.com/sabre-io/dav/issues/1178

baikal/default/PKGBUILD

@@ -3,7 +3,7 @@
 
 pkgname=baikal
 pkgver=0.6.0
-pkgrel=1
+pkgrel=2
 pkgdesc='Lightweight CalDAV+CardDAV server'
 url='http://sabre.io/baikal/'
 arch=('any')
@@ -11,14 +11,24 @@ license=('GPL')
 depends=('php')
 optdepends=('sqlite: Database' 'mariadb: Alternate database' 'php-sqlite: To use the sqlite backend')
 source=("https://github.com/fruux/Baikal/releases/download/$pkgver/baikal-$pkgver.zip"
-        'baikal.install')
+        'baikal.install'
+        'Fixed-getcontenttype-being-null.patch::https://github.com/sabre-io/dav/commit/7badab41ca48b2705426907d533aca374ba6401f.patch')
 sha1sums=('47398b00cad4330bfac9df8abc03df896e2d206f'
-          'deb948e61c3cd8d6ad560321f78c0b288f7a6210')
+          'deb948e61c3cd8d6ad560321f78c0b288f7a6210'
+          '955a7957e013b6f643d53b5d6c648c52d42550b9')
 options=('!strip')
 install=baikal.install
 
+prepare() {
+  cd "${srcdir}/baikal/vendor/sabre/dav"
+
+  # fix https://github.com/sabre-io/Baikal/issues/819 / https://github.com/sabre-io/dav/issues/1178
+  patch -p1 -i "$srcdir/Fixed-getcontenttype-being-null.patch"
+}
+
 package() {
   cd "${srcdir}/baikal"
+
   install -dm 755 "$pkgdir"/usr/share/{webapps,doc}"/$pkgname"
   install -dm 700 -o http -g http "$pkgdir/var/lib/$pkgname"
   cp -R Core html vendor "$pkgdir/usr/share/webapps/$pkgname"