Dispatch.pm: improve process_post error handling
Dispatch.pm: improve process_post error handling

When the JavaScript side generates a deranged request like "GET" without any
target, refrain from crashing but instead log an error message.

Signed-off-by: Nathan Cutler <f9d8c66a4e898e67db786769b5b347b640e1a9a6@suse.com>

smithfarm/dochazka-www,smithfarm/dochazka-www,smithfarm/dochazka-www