integer env parsing in rcube_config.php possibly broken

[gutmensch]

I have an environment variable exposed to roundcube called

ROUNDCUBE_MANAGESIEVE_PORT=4190

This results in an endless parsing loop in https://github.com/roundcube/roundcubemail/blame/master/program/lib/Roundcube/rcube_config.php with the detected values and parameters from parse_env and guess_type being always

[06-Nov-2021 12:26:21 UTC] 4190
[06-Nov-2021 12:26:21 UTC] float
[06-Nov-2021 12:26:21 UTC] float

One reason seems to be that the order of float and integer detection in guess_type seems wrong, the float regex also matches integers (see screenshot), so probably integer should be checked first. The other reason is maybe that parse_env enters a recursion because it never returns for a float value, only for double. Was that missed in some earlier change from float to double?!

Thanks anyway for the great project and keep up the good work!
Cheers,
Robert

[alecpl]

Fixed.