haxelib git regression

[waneck]

Steps to reproduce:

• Run haxelib git [somelib] [git-address] [some dir] . The directory part is needed
• Run that again, and select n for the question if we should overwrite the branch
• See the error

This seems to be a regression, as we never had that before updating to Haxe 3.4

Example:

$ haxelib git logging git@github.com:proletariatgames/logging.git master src                                           
Installing logging from git@github.com:proletariatgames/logging.git branch: master
Development directory set to /usr/lib/haxe/lib/logging/git/src
$ haxelib git logging git@github.com:proletariatgames/logging.git master src                                           
You already have logging version git installed.
Overwrite branch: <unspecified> with "master" [y/n/a] ? n
Updating logging version git ...
Error: [file_contents,/usr/lib/haxe/lib/logging/.current]