bad passwords cause error

bin/mw

@@ -175,7 +175,7 @@ formatShortcut() { \
 	done ;}
 
 tryconnect() { mkdir -p "$maildir/$title"
-	if mailboxes="$(mbsync -l "$title" | sed 's/\//./')" >/dev/null 2>&1; then
+	if mailboxes="$(mbsync -l "$title" | sed 's/\//./')" >/dev/null 2>&1 && [ -n "$mailboxes" ]; then
 		[ "$accounttype" = "online" ] && sed -i "/IMAPStore $title-remote$/,/# End profile/d" "$mbsyncrc"
 		printf "\033[32mMailboxes detected.\033[0m\\n"
 		echo "$mailboxes" | xargs -I {} mkdir -p "$maildir/$title/{}"