Qnx: Fix slog2er parsing when logs contain \n

If the logs contain a '\n' the message parts in the new lines are not displayed.
The new line messages are displayed with no buffer details and are ignored
when the parsing is processed.

Change-Id: I0e174dd5283a64c4e9b0434c06dd417f1be2c810
Reviewed-by: Tobias Nätterlund <tobias.naetterlund@kdab.com>
Reviewed-by: Nicolas Arnaud-Cormos <nicolas@kdab.com>