Postinstall needs gtk-update-icon-cache

.SRCINFO

@@ -1,5 +1,5 @@
 # Generated by mksrcinfo v8
-# Sun Feb 21 21:31:54 UTC 2016
+# Sun Feb 21 22:43:54 UTC 2016
 pkgbase = seafile-client
 	pkgdesc = This is seafile client for synchronizing your local files with seafile server. Qt4 version.
 	pkgver = 5.0.5
@@ -14,6 +14,7 @@ pkgbase = seafile-client
 	depends = seafile-shared
 	depends = qt4>=4.8.0
 	depends = qtwebkit
+	depends = gtk-update-icon-cache
 	conflicts = seafile-client-qt5
 	options = !libtool
 	options = !emptydirs

PKGBUILD

@@ -8,7 +8,7 @@ pkgdesc="This is seafile client for synchronizing your local files with seafile
 arch=('i686' 'x86_64')
 url="https://github.com/haiwen/seafile-client/"
 license=('Apache')
-depends=('seafile-shared' 'qt4>=4.8.0' 'qtwebkit')
+depends=('seafile-shared' 'qt4>=4.8.0' 'qtwebkit' 'gtk-update-icon-cache')
 makedepends=("cmake" "seafile-shared>=${pkgver}" )
 options=('!libtool' '!emptydirs')
 conflicts=('seafile-client-qt5')