[gimp-macos-build] For some reason charset.alias was not copyied, fix that

[Alex Samorukov <asamorukov src gnome org>]

commit 05210dea07e9108a0b2e104069bad83688064e1f
Author: Oleksii Samorukov <oleksii_samorukov mckinsey com>
Date:   Fri Aug 30 15:51:04 2019 +0200

    For some reason charset.alias was not copyied, fix that

 package/build.sh | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/package/build.sh b/package/build.sh
index 2d9b354..ae5481c 100755
--- a/package/build.sh
+++ b/package/build.sh
@@ -18,6 +18,8 @@ echo "$GIMP_VERSION"
 
 cat info-2.10.plist.tmpl | sed "s|%VERSION%|${GIMP_VERSION}|g" > info-2.10.plist
 
+echo "Copying charset.alias"
+cp "${HOME}/gtk/source/gettext-0.19.8/gettext-tools/libgettextpo/charset.alias" "${HOME}/gtk/inst/lib/"
 echo "Creating bundle"
 gtk-mac-bundler gimp-2.10.bundle