Rebuild to fix GCC 8 mis-compilation

See https://da.gd/YJVwk ("GCC 8 ABI change on x86_64")

libimagequant.spec

@@ -1,6 +1,6 @@
 Name:           libimagequant
 Version:        2.11.7
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Palette quantization library
 
 License:        GPLv3+ and MIT
@@ -54,6 +54,10 @@ install -Dpm 0644 %{name}.h %{buildroot}%{_includedir}/%{name}.h
 
 
 %changelog
+* Wed Mar 07 2018 Adam Williamson <awilliam@redhat.com> - 2.11.7-3
+- Rebuild to fix GCC 8 mis-compilation
+  See https://da.gd/YJVwk ("GCC 8 ABI change on x86_64")
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.11.7-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild