[retro-gtk] pa-player: Check the pa_simple before writing

[Adrien Plazas <aplazas src gnome org>]

commit a4c26d7a40c21a4394a7232ede5636eff850ae7b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Wed Nov 8 08:13:13 2017 +0100

    pa-player: Check the pa_simple before writing
    
    This avoids crashes when the construction of the pa_simple failed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781887

 retro-gtk/retro-pa-player.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/retro-gtk/retro-pa-player.c b/retro-gtk/retro-pa-player.c
index 0f4f0af..2a6239f 100644
--- a/retro-gtk/retro-pa-player.c
+++ b/retro-gtk/retro-pa-player.c
@@ -82,6 +82,9 @@ retro_pa_player_on_audio_output (RetroCore *sender,
   if (self->simple == NULL || sample_rate != self->sample_rate)
     retro_pa_player_prepare_for_sample_rate (self, sample_rate);
 
+  if (self->simple == NULL)
+    return;
+
   pa_simple_write (self->simple, data, sizeof (gint16) * length, NULL);
 }