DD message area chooser: Updated to try to prevent the error...

DD message area chooser: Updated to try to prevent the error "this.subBoardListPrintfInfo[pGrpIdx] is undefined" when only choosing a sub-board within the user's current message group.
16 jobs for dd_msg_area_chooser_only_subboard_change_fix in 10 minutes and 42 seconds (queued for 17 seconds)
Status Job ID Name Coverage
  Build
passed #36367
FreeBSD
jsdoor-freebsd

00:03:48

passed #36368
Linux
jsdoor-linux

00:07:08

passed #36370
FreeBSD
jsdoor-windows

00:01:54

passed #36362
FreeBSD
sbbs-freebsd

00:05:20

passed #36356
Linux
sbbs-linux

00:09:50

passed #36359
Windows
sbbs-windows

00:05:24

passed #36369
FreeBSD
sexpots-freebsd

00:00:13

passed #36357
Linux
sexpots-linux

00:00:22

passed #36386
Windows
sexpots-windows

00:00:21

passed #36361
Windows
svdm-windows

00:00:25

passed #36365
FreeBSD
syncdraw-freebsd

00:00:24

passed #36366
Linux
syncdraw-linux

00:01:06

passed #36363
FreeBSD
syncterm-freebsd

00:00:58

passed #36358
Linux
syncterm-linux

00:03:11

passed #36364
FreeBSD
syncterm-windows

00:01:42

canceled #36360
Windows
sexpots-windows

00:58:34