[client v3 3/4] streaming: Don't crash if the stream creation fails

[Francois Gouget <fgouget@xxxxxxxxxxxxxxx>]

Note that this implies closing the stream before receiving any frame.

Signed-off-by: Francois Gouget <fgouget@xxxxxxxxxxxxxxx>
---
 src/channel-display.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/channel-display.c b/src/channel-display.c
index 22c54f2..709b3d2 100644
--- a/src/channel-display.c
+++ b/src/channel-display.c
@@ -109,6 +109,7 @@ static display_surface *find_surface(SpiceDisplayChannelPrivate *c, guint32 surf
 static void spice_display_channel_reset(SpiceChannel *channel, gboolean migrating);
 static void spice_display_channel_reset_capabilities(SpiceChannel *channel);
 static void destroy_canvas(display_surface *surface);
+static void destroy_stream(SpiceChannel *channel, int id);
 static void display_session_mm_time_reset_cb(SpiceSession *session, gpointer data);
 static SpiceGlScanout* spice_gl_scanout_copy(const SpiceGlScanout *scanout);
 
@@ -1125,6 +1126,7 @@ static void display_handle_stream_create(SpiceChannel *channel, SpiceMsgIn *in)
     }
     if (st->video_decoder == NULL) {
         spice_printerr("could not create a video decoder for codec %u", op->codec_type);
+        destroy_stream(channel, op->id);
     }
 }
 
@@ -1231,6 +1233,7 @@ static void display_update_stream_report(SpiceDisplayChannel *channel, uint32_t
     g_return_if_fail(c->nstreams > stream_id);
 
     st = channel->priv->streams[stream_id];
+    g_return_if_fail(st != NULL);
 
     if (!st->report_is_active) {
         return;
@@ -1353,6 +1356,7 @@ static void display_handle_stream_data(SpiceChannel *channel, SpiceMsgIn *in)
     g_return_if_fail(c->nstreams > op->id);
 
     st =  c->streams[op->id];
+    g_return_if_fail(st != NULL);
     mmtime = stream_get_time(st);
 
     if (spice_msg_in_type(in) == SPICE_MSG_DISPLAY_STREAM_DATA_SIZED) {
@@ -1420,6 +1424,7 @@ static void display_handle_stream_clip(SpiceChannel *channel, SpiceMsgIn *in)
     g_return_if_fail(c->nstreams > op->id);
 
     st = c->streams[op->id];
+    g_return_if_fail(st != NULL);
 
     if (st->msg_clip) {
         spice_msg_in_unref(st->msg_clip);
-- 
2.8.1

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