DB password is not prompted

The issue was reported by @marcin during 1.10 sanity checks. Source.

I build stork-server on mac and attempted to start it. I am getting the following error:

./stork-server --rest-static-files-dir=/Users/marcin/devel/stork-build/usr/share/stork/www/ --db-host=/tmp/ --db-user=stork
WARN[2023-04-04 16:30:09]           server.go:195   The hook directory: '/var/lib/stork-server/hooks' doesn't exist  error="cannot find plugin paths in: /var/lib/stork-server/hooks: cannot list hook directory: /var/lib/stork-server/hooks: open /var/lib/stork-server/hooks: no such file or directory"
INFO[2023-04-04 16:30:09]       connection.go:90    Checking connection to database              
FATA[2023-04-04 16:30:09]             main.go:63    Cannot start the Stork Server: FATAL #28P01 empty password returned by client
unable to connect to the database using provided settings
isc.org/stork/server/database.NewPgDBConn
	/Users/marcin/devel/stork-1.10.0/backend/server/database/connection.go:99
isc.org/stork/server/database.NewApplicationDatabaseConn
	/Users/marcin/devel/stork-1.10.0/backend/server/database/connection.go:152
isc.org/stork/server.(*StorkServer).Bootstrap
	/Users/marcin/devel/stork-1.10.0/backend/server/server.go:202
main.main
	/Users/marcin/devel/stork-1.10.0/backend/cmd/stork-server/main.go:61
runtime.main
	/Users/marcin/devel/stork-1.10.0/tools/golang/go/src/runtime/proc.go:250
runtime.goexit
	/Users/marcin/devel/stork-1.10.0/tools/golang/go/src/runtime/asm_amd64.s:1594

Our help says that it is recommended to leave the password blank to be prompted, but I am not prompted.

Oddly enough, I can be prompted when I do this:

$ ./stork-server --rest-static-files-dir=/Users/marcin/devel/stork-build/usr/share/stork/www/ --db-host=/tmp/ --db-user=stork --db-password=" "
WARN[2023-04-04 16:33:28]           server.go:195   The hook directory: '/var/lib/stork-server/hooks' doesn't exist  error="cannot find plugin paths in: /var/lib/stork-server/hooks: cannot list hook directory: /var/lib/stork-server/hooks: open /var/lib/stork-server/hooks: no such file or directory"
INFO[2023-04-04 16:33:28]       connection.go:90    Checking connection to database              
database password for user stork: