Fix: Apply Windows symlink patch to local drives only.
Fix: Apply Windows symlink patch to local drives only.

Issue:

If path targets a network location, `_getfinalpathname` resolves the path to
\\?\UNC\server\share but links are not resolved anyway. This kind of path was
not yet handled and thus not recognized valid by `os.path.isfile()`

Solution:

To avoid issues with any other kind of UNC like paths, the result is checked
for ':' in it indicating an ordinary local path. If this does not match fall
back to `os.path.abspath()`

jisaacks/GitGutter