libsigc++3: Update to 3.0.3

mingw-w64-libsigc++3/0001-Empty-connections-can-be-safely-copied-now.patch

@@ -1,47 +0,0 @@
-From 138510d4002a0ee866016f462e6687454757b4e8 Mon Sep 17 00:00:00 2001
-From: AIGRIND <AIGRIND-LLC@users.noreply.github.com>
-Date: Wed, 25 Sep 2019 11:29:45 +0200
-Subject: [PATCH] Empty connections can be safely copied now
-
-Copy constructor and `operator=` could fail if `src` was empty.
-```
-sigc::connection con1;
-sigc::connection con2(con1); // failed
-```
-```
-sigc::connection con3;
-sigc::connection con4;
-con3 = con4; // failed
-```
----
- sigc++/weak_raw_ptr.h | 7 +++++--
- 1 file changed, 5 insertions(+), 2 deletions(-)
-
-diff --git a/sigc++/weak_raw_ptr.h b/sigc++/weak_raw_ptr.h
-index ccae1b0..816981c 100644
---- a/sigc++/weak_raw_ptr.h
-+++ b/sigc++/weak_raw_ptr.h
-@@ -50,7 +50,8 @@ struct weak_raw_ptr : public sigc::notifiable
-   inline weak_raw_ptr(const weak_raw_ptr& src) noexcept
-   : p_(src.p_)
-   {
--    p_->add_destroy_notify_callback(this, &notify_object_invalidated);
-+    if (p_)
-+      p_->add_destroy_notify_callback(this, &notify_object_invalidated);
-   }
- 
-   inline weak_raw_ptr& operator=(const weak_raw_ptr& src) noexcept
-@@ -60,7 +61,9 @@ struct weak_raw_ptr : public sigc::notifiable
-     }
- 
-     p_ = src.p_;
--    p_->add_destroy_notify_callback(this, &notify_object_invalidated);
-+    
-+    if (p_)
-+      p_->add_destroy_notify_callback(this, &notify_object_invalidated);
- 
-     return *this;
-   }
--- 
-2.23.0.windows.1
-

mingw-w64-libsigc++3/PKGBUILD

@@ -3,7 +3,7 @@
 _realname=libsigc++
 pkgbase=mingw-w64-${_realname}3
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}3"
-pkgver=3.0.0
+pkgver=3.0.3
 pkgrel=1
 pkgdesc="Libsigc++ implements a full callback system for use in widget libraries - V3 (mingw-w64)"
 arch=('any')
@@ -12,16 +12,11 @@ license=("LGPL")
 makedepends=("${MINGW_PACKAGE_PREFIX}-gcc" "${MINGW_PACKAGE_PREFIX}-pkg-config")
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 options=('staticlibs' 'strip')
-source=("https://download.gnome.org/sources/libsigc++/${pkgver%.*}/${_realname}-${pkgver}.tar.xz"
-        "0001-Empty-connections-can-be-safely-copied-now.patch")
-sha256sums=('50a0855c1eb26e6044ffe888dbe061938ab4241f96d8f3754ea7ead38ab8ed06'
-            '97b7d0521265fdc54436eb469a4efbb6692921b9e8ecf29614280e0f4c7e9f96')
+source=("https://download.gnome.org/sources/libsigc++/${pkgver%.*}/${_realname}-${pkgver}.tar.xz")
+sha256sums=('e4f4866a894bdbe053e4fb22ccc6bc4b6851fd31a4746fdd20b2cf6e87c6edb6')
 
 prepare() {
   cd "${srcdir}/${_realname}-${pkgver}"
-
-  # https://github.com/libsigcplusplus/libsigcplusplus/commit/138510d40
-  patch -p1 -i "${srcdir}"/0001-Empty-connections-can-be-safely-copied-now.patch
 }
 
 build() {