* remove unnecessary nullptr check, these are always called from an
initialized AP_DroneCAN so if it's nullptr something has gone
horrifically wrong
* pass in driver index instead of repeatedly calling function to get it
* simplify error handling; knowing exactly which allocation failed is not
super helpful and one failing likely means subsequent ones will too,
as it can only fail due to being out of memory
The last_update_ms variable was never set in the DroneCAN implementation of the Electronic Fuel Injector sensor. This causes the function bool AP_EFI::is_healthy to always return false. Solved by adding one line of code to set the variable to the correct value.
Thomas Watson
Valentin Berman
Pradeep CK
Andrew Tridgell
bugobliterator
Peter Barker