[adwaita-icon-theme] zopfli syntax fix

[Jakub Steiner <jimmac src gnome org>]

commit 9f488762b6670662815d55081089c5aca25e690e
Author: Jakub Steiner <jimmac gmail com>
Date:   Tue Sep 26 18:38:31 2017 +0200

    zopfli syntax fix

 render-icon-theme.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/render-icon-theme.py b/render-icon-theme.py
index 4b26c68..5badaeb 100755
--- a/render-icon-theme.py
+++ b/render-icon-theme.py
@@ -14,7 +14,7 @@ inkscape_process = None
 
 def optimize_png(png_file):
     if os.path.exists(ZOPFLIPNG):
-        process = subprocess.Popen([ZOPFLIPNG, '-ym', png_file])
+        process = subprocess.Popen([ZOPFLIPNG, '-y', '-m', png_file, png_file])
         process.wait()
     elif os.path.exists(OPTIPNG):
         process = subprocess.Popen([OPTIPNG, '-quiet', '-o7', png_file])