Update source URL (#1459085)

libpng12.spec

@@ -1,7 +1,7 @@
 Summary: Old version of libpng, needed to run old binaries
 Name: libpng12
 Version: 1.2.57
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: zlib
 URL: http://www.libpng.org/pub/png/
 
@@ -10,7 +10,7 @@ Obsoletes: libpng-compat <= 2:1.5.10
 
 # Note: non-current tarballs get moved to the history/ subdirectory,
 # so look there if you fail to retrieve the version you want
-Source0: ftp://ftp.simplesystems.org/pub/png/src/libpng12/libpng-%{version}.tar.xz
+Source0: https://ftp-osl.osuosl.org/pub/libpng/src/libpng12/libpng-%{version}.tar.xz
 
 Patch0: libpng12-multilib.patch
 Patch1: libpng12-pngconf.patch
@@ -82,6 +82,9 @@ make check
 %{_libdir}/pkgconfig/libpng12.pc
 
 %changelog
+* Tue Jun 06 2017 Nikola Forró <nforro@redhat.com> - 1.2.57-2
+- Update source URL (#1459085)
+
 * Tue Apr 04 2017 Nikola Forró <nforro@redhat.com> - 1.2.57-1
 - New upstream release 1.2.57