fmt: backport clang 21 build fix

mingw-w64-fmt/PKGBUILD

@@ -6,7 +6,7 @@ _realname=fmt
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=11.2.0
-pkgrel=2
+pkgrel=3
 pkgdesc="A modern formatting library for C++ (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw64' 'mingw32' 'ucrt64' 'clang64' 'clangarm64')
@@ -22,13 +22,16 @@ makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja")
 source=("https://github.com/fmtlib/fmt/archive/${pkgver}/${_realname}-${pkgver}.tar.gz"
+        "https://github.com/fmtlib/fmt/commit/f4345467fce7edbc6b36c3fa1cf197a67be617e2.patch"
         cmake-dual-lib.patch)
 sha256sums=('bc23066d87ab3168f27cef3e97d545fa63314f5c79df5ea444d41d56f962c6af'
+            '540e23a378682da23ce2c200302cd37ec1e3be92217733d34a877ed9db0efcc9'
             '1c30f6b7f371bab3cb094113883080e0dd8e8c2f75f9abb13136786b8ee96f85')
 
 prepare() {
   cd "${_realname}-${pkgver}"
   patch -p1 -i ${srcdir}/cmake-dual-lib.patch
+  patch -p1 -i ${srcdir}/f4345467fce7edbc6b36c3fa1cf197a67be617e2.patch
 }
 
 build() {