Don't lie when dying

src/imapdomo.skel

     test -n "$Action" || usage -w "no action specified"
     debug -v Action CfgDir LogDir HeaderDir Debug CdTo
     lshandlers | grep -qw "$Action" \
-     || die "no handler for action: $Action.lua in $IMAPDOMO_HOME/handlers"
+     || die "no handler for action: $Action.lua in $CfgDir/handlers"
     cmd=$(mkcmd)
     debug -v cmd
     bash -n <<<"$cmd" || bug "bad syntax of cmd: '$cmd'"