License file newline conversion wrong (`\r\n` -> `\r\r\n`)

Seemingly the IFW wants Windows newlines in installed license files so it converts `\n` -> `\r\n`. Sounds kinda reasonable but it does it even when the file already has Windows line endings. `\r\n` is converted to `\r\r\n`. This is happening to my files but also is apparent in the Qt 5.7.0 and Qt IFW 2.0.3 installed license files.