init: Fix bogus message about invalid root device.

When the initqueue cannot be processed, it might be about an invalid
root device (in which case a separate message produced via
wait_for_dev() should be displayed anyway), but it could also
be for any other reason (e.g. /dev/resume not existing).

Therefore, it is best to use a more generic error message.

Also a minor tab->space conversion in the near vacinity of
the real change.

modules.d/99base/init

@@ -268,7 +268,7 @@ while :; do
 
     main_loop=$(($main_loop+1))
     [ $main_loop -gt $RDRETRY ] \
-        && { flock -s 9 ; emergency_shell "No root device \"$root\" found"; } 9>/.console_lock
+        && { flock -s 9 ; emergency_shell "Unable to process initqueue"; } 9>/.console_lock
 done
 unset job
 unset queuetriggered