[gnome-shell-extensions] build: Use backend-agnostic meson commands for export

[Marge Bot <marge-bot src gnome org>]

commit 757bcee4e21b205ec89179e4c1ee39c5329819de
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Aug 6 03:29:51 2021 +0200

    build: Use backend-agnostic meson commands for export
    
    There's no alternative backend in sight for us, but it's nice to
    only deal with a single build tool.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/182>

 export-zips.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/export-zips.sh b/export-zips.sh
index 3099144..1c3cc0d 100755
--- a/export-zips.sh
+++ b/export-zips.sh
@@ -7,7 +7,7 @@ builddir=`mktemp -p $srcdir -d _build.XXXXXX` || exit 1
 installdir=`mktemp -p $srcdir -d _install.XXXXXX` || exit 1
 
 meson setup --prefix=$installdir -Dextension_set=all $srcdir $builddir
-ninja -C$builddir install
+meson install -C $builddir
 
 rm -rf $srcdir/zip-files
 mkdir $srcdir/zip-files