Bug: Watchdog Course Alarm is > 180, instead of max 180.

[rgleason]

see original issue in OpenCPN OpenCPN/OpenCPN#4477

Watchdog generates incorrect course alarms.

Reproduction steps
Go to the WD alarm screen
New Alarm
Course
Set course to the current course and off course > 10 degrees.
Port or Starboard.
Use GPS, though Heading sensor has the same behaviour.
Condition triggered for 10 seconds
Enable the alarm

WD will then easily generate alarms saying e.g. 355 or 360 degrees, whereas no alarm should be generated, since the actual of course is just 5 degrees.

Expected behavior
Trivial, no alarm when condition is not met. Off course is always between -180 and 180.

Screenshots
n/a

Desktop (please complete the following information if applicable):
Win 11 on Intel NUC.
OCN 5.10.2-0 +21è5712 (please make that number copy-able in the about screen)
PluginAPI 118.

Smartphone/Tablet (please complete the following information if applicable):
n/a

Additional context
With this not being in place, the complete course alarm is useless. :-(
I tried changing the COMM Priorities for the COG, but that made no difference.

[sebastien-rosset]

This may be caused by what I've discovered in #118

[rgleason]

@pa2wlt
This report was written by Werner, but entered into OpenCPN, rather than Watchdog, therefore I moved the Issue, so this is the right Issue to attach Sebastien's fix! Thank you Sebastien for your expertise and quick attention. Much appreciated.
I will build this and push it out to be published.

Werner after you test this, let me know if this can be closed please.