[Bug] winGRASS Version: 7.9.dev - g.extension: NameError: name 'branch' is not defined

[hellik]

Describe the bug

winGRASS Version: 7.9.dev - g.extension: NameError: name 'branch' is not defined

g.extension extension=r.sample.category                                         
Downloading precompiled GRASS Addons <r.sample.category>...
Traceback (most recent call last):
  File
"C:\OSGEO4~1\apps\grass\grass79/scripts/g.extension.py",
line 2343, in <module>
    sys.exit(main())
  File
"C:\OSGEO4~1\apps\grass\grass79/scripts/g.extension.py",
line 2323, in main
    install_extension(source=source, url=url, xmlurl=xmlurl,
branch=branch)
  File
"C:\OSGEO4~1\apps\grass\grass79/scripts/g.extension.py",
line 871, in install_extension
    ret1, new_modules_ext, new_files_ext =
install_extension_win(extension)
  File
"C:\OSGEO4~1\apps\grass\grass79/scripts/g.extension.py",
line 1236, in install_extension_win
    branch=branch)
NameError: name 'branch' is not defined

maybe related to the recent changes in g.extension in master?

To Reproduce
Steps to reproduce the behavior:

1. start winGRASS Version: 7.9.dev Code revision: 47579af
2. in g.extension GUI try to download an addon

System description (please complete the following information):

GRASS Version: 7.9.dev                                                          
Code revision: 47579afce                                                        
Build date: 2020-12-03                                                          
Build platform: x86_64-w64-mingw32                                              
GDAL: 3.1.4                                                                     
PROJ: 6.3.2                                                                     
GEOS: 3.8.1                                                                     
SQLite: 3.29.0                                                                  
Python: 3.7.0                                                                   
wxPython: 4.0.7                                                                 
Platform: Windows-10-10.0.19041-SP0 (OSGeo4W) 

[ninsbl]

Yes. Sorry. My fault. Will look into this ASAP.

[ninsbl]

Sorry for the glitch. Does not seem to be covered by tests.... In the PR I documented how I tested the Windows specific function on my linux box in Python.

[hellik]

#1151 should fix the issue. waiting for merging and backporting.