[adwaita-icon-theme] Fullcolor: fix rendering script for inkscape 1.0

[Jakub Steiner <jimmac src gnome org>]

commit e6f52be35ddc3d8f409512cbb9e075cb63aa8e81
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon Jun 8 12:09:11 2020 +0200

    Fullcolor: fix rendering script for inkscape 1.0
    
    - inkscape 1.0 would keep complaining about syntax with --shell
      and the Popen way
    - just using dumb subprocess.run() made it shut up
    
    Fixes https://gitlab.gnome.org/GNOME/adwaita-icon-theme/-/issues/87

 render-icon-theme.py | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)
---
diff --git a/render-icon-theme.py b/render-icon-theme.py
index 68fd93ee..51a75ba4 100755
--- a/render-icon-theme.py
+++ b/render-icon-theme.py
@@ -34,16 +34,9 @@ def wait_for_prompt(process, command=None):
         output += process.stdout.read(1)
         output = output[1:]
 
-def start_inkscape():
-    process = subprocess.Popen(['flatpak','run','org.inkscape.Inkscape','--shell'], bufsize=0, 
stdin=subprocess.PIPE, stdout=subprocess.PIPE)
-    wait_for_prompt(process)
-    return process
-
-def inkscape_render_rect(icon_file, rect, output_file):
-    global inkscape_process
-    if inkscape_process is None:
-        inkscape_process = start_inkscape()
-    wait_for_prompt(inkscape_process, '%s -i %s -e %s' % (icon_file, rect, output_file))
+def inkscape_render_rect(icon_file, rect, output_file):    
+    #print("flatpak run org.inkscape.Inkscape --batch-process -i %s --export-type=png -o %s %s" % (rect, 
output_file,icon_file));
+    subprocess.run(['flatpak','run','org.inkscape.Inkscape', '--batch-process', '-i', rect, 
'--export-type=png', '-o', output_file, icon_file])
     optimize_png(output_file)
 
 class ContentHandler(xml.sax.ContentHandler):