Fix uninitialized variable error in error logging
Fix uninitialized variable error in error logging

Two calls to log errors in the code for generating new message IDs
when sending messages were using "sl3u" rather than the correct
"SL3U", so when these errors were triggered the code would crash due
to an undefined variable when trying to log the errors. :-/

jikamens/send-later,jikamens/send-later,jikamens/send-later,jikamens/send-later