If we can't find an executable do not treat it as TransientError
This is purely cosmetics bc it is not further implemented in `backend.py`
@@ -713,7 +713,7 @@ class Linter(metaclass=LinterMeta):
cmd = self.get_cmd()
if not cmd: # We couldn't find an executable
self.notify_failure()
- return None # ABORT
+ return []
try:
output = self.run(cmd, code)
