libsig++: Update to 2.5.4

mingw-w64-libsigc++/PKGBUILD

@@ -3,7 +3,7 @@
 _realname=libsigc++
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=2.5.3
+pkgver=2.5.4
 pkgrel=1
 pkgdesc="Libsigc++ implements a full callback system for use in widget libraries - V2 (mingw-w64)"
 arch=('any')
@@ -13,7 +13,7 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-gcc" "${MINGW_PACKAGE_PREFIX}-pkg-config")
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 options=('staticlibs' 'strip')
 source=("http://ftp.gnome.org/pub/GNOME/sources/libsigc++/${pkgver%.*}/libsigc++-${pkgver}.tar.xz")
-sha256sums=('e1eb23a408b7e394b152e20800146ab614e8027f02db2da7418ccc33bd337525')
+sha256sums=('ecf55f53d6058ba6e41985b862f2e95fb5c2b31c008caa16984e790547337ea7')
 
 build() {
   [[ -d "${srcdir}/build-${MINGW_CHOST}" ]] && rm -rf "${srcdir}/build-${MINGW_CHOST}"