Ignore scroll command when msgstore is nil

Fixes ~sircmpwn/aerc2#205. Many functions do a nil check on the store,
so this changes Store() so it returns nil when msglist is nil.

It also places the Scroll() behind the nil check in the next-message command.

https://todo.sr.ht/~sircmpwn/aerc2/205

1 files changed, 3 insertions, 0 deletions

diff --git a/widgets/account.go b/widgets/account.go
index 07b5010..688b660 100644
--- a/widgets/account.go
+++ b/widgets/account.go
@@ -164,6 +164,9 @@ func (acct *AccountView) Messages() *MessageList {
 }
 
 func (acct *AccountView) Store() *lib.MessageStore {
+	if acct.msglist == nil {
+		return nil
+	}
 	return acct.msglist.Store()
 }