[glib] glib-mkenums: fix encoding error when writing files

[Christoph Reiter <creiter src gnome org>]

commit b92e15c75df7ed517bc4b256c710cad5cfa43816
Author: Christoph Reiter <creiter src gnome org>
Date:   Sat Jul 22 20:47:43 2017 +0200

    glib-mkenums: fix encoding error when writing files
    
    Instead of using NamedTemporaryFile, which doesn't take an encoding in Python 2
    use mkstemp() to create a file and open it with io.open(), with a proper
    encoding set.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785113

 gobject/glib-mkenums.in |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gobject/glib-mkenums.in b/gobject/glib-mkenums.in
index 653a769..fccc000 100755
--- a/gobject/glib-mkenums.in
+++ b/gobject/glib-mkenums.in
@@ -366,7 +366,9 @@ if output is not None:
     out_suffix = '_' + os.path.splitext(out_fn)[1]
     if out_dir == '':
         out_dir = '.'
-    tmpfile = tempfile.NamedTemporaryFile(dir=out_dir, delete=False)
+    fd, filename = tempfile.mkstemp(dir=out_dir)
+    os.close(fd)
+    tmpfile = io.open(filename, "w", encoding="utf-8")
     output_stream = tmpfile
 else:
     tmpfile = None