!15 change install require from autotrace to potrace

From: @wang--ge
Reviewed-by: @small_leek
Signed-off-by: @small_leek

fontforge.spec

@@ -3,7 +3,7 @@
 
 Name:           fontforge
 Version:        20200314
-Release:        1
+Release:        2
 Summary:        Outline and bitmap font editor
 License:        GPLv3+
 URL:            http://fontforge.github.io/
@@ -12,7 +12,7 @@ Source0:        https://github.com/fontforge/%{name}/archive/%{gittag0}.tar.gz#/
 Patch0001:      fontforge-20200314-Call-gdk_set_allowed_backends-before-gdk_init.patch
 Patch0002:      fontforge-20200314-sphinx-make-changes-to-support-Sphinx-3.patch
 
-Requires:       xdg-utils autotrace hicolor-icon-theme
+Requires:       xdg-utils potrace hicolor-icon-theme
 BuildRequires:  gcc-c++ cmake libjpeg-devel libtiff-devel libpng-devel giflib-devel libxml2-devel
 BuildRequires:  freetype-devel desktop-file-utils libuninameslist-devel libXt-devel xorg-x11-proto-devel
 BuildRequires:  gettext pango-devel cairo-devel libspiro-devel python3-devel readline-devel
@@ -112,6 +112,9 @@ popd
 %{_mandir}/man1/*.1*
 
 %changelog
+* Wed Dec 16 2020 Ge Wang <wangge20@huawei.com> - 20200314-2
+- change install require autotrace to potrace
+
 * Wed Aug 26 2020 jinzhimin <jinzhimin2@huawei.com> - 20200314-1
 - upgrade to 20200314