Any exception raised by fn() propagated immediately out of the retry
loop, effectively making until() a single-shot call the moment any
transient error occurred.
Fix by wrapping fn() in a try/except inside the loop and treating any
exception as a "not yet" result. The last exception is preserved and
re-raised if all attempts are exhausted, so failure output is still
meaningful. Also fix a missing newline at end of file.
Fixes#1403
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Joachim Wiberg
a5c807abe0