[gobject-introspection] Use binary mode buffer for stdout

[Emmanuele Bassi <ebassi src gnome org>]

commit cbe75d5445b26f4ac877d1324e4d50933091cbd9
Author: Hu Jialun <hujialun outlook sg>
Date:   Fri Jan 21 18:39:39 2022 +0000

    Use binary mode buffer for stdout
    
    By default, stdout is in text mode, expecting a str rather than byte.
    
    Change the output destination to the underlying binary buffer to write bytes.

 giscanner/scannermain.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/giscanner/scannermain.py b/giscanner/scannermain.py
index 957ba0b7..1124bc74 100644
--- a/giscanner/scannermain.py
+++ b/giscanner/scannermain.py
@@ -471,7 +471,7 @@ def create_source_scanner(options, args):
 def write_output(data, options):
     """Write encoded XML 'data' to the filename specified in 'options'."""
     if options.output == "-":
-        output = sys.stdout
+        output = sys.stdout.buffer
         try:
             output.write(data)
         except IOError as e: