codec/avcodec/vaapi.c: abort() on runtime errors.

These conditions should not happen.

modules/codec/avcodec/vaapi.c

@@ -418,7 +418,7 @@ static int DisplayPicture( vlc_va_t *p_external, picture_t *p_picture, AVFrame *
         return VLC_EGENERIC;
 
     if (!p_picture->p_sys)
-        return VLC_EGENERIC;
+        abort();
 
     if (p_picture->p_sys->b_own_vout)
         return VLC_SUCCESS;
@@ -426,7 +426,7 @@ static int DisplayPicture( vlc_va_t *p_external, picture_t *p_picture, AVFrame *
     /* FindSurface */
     p_picture->p_sys->surface = FindSurface( p_external, i_surface_id );
     if( !p_picture->p_sys->surface )
-        return VLC_EGENERIC;
+        abort();
 
     assert(p_picture->p_sys->subpicture == NULL);
 
@@ -530,6 +530,7 @@ vlc_va_t *vlc_va_NewVaapi( vlc_object_t *obj, int i_codec_id )
     p_va->va.close = Delete;
     return &p_va->va;
 }
+
 #else
 vlc_va_t *vlc_va_NewVaapi( vlc_object_t *obj, int i_codec_id )
 {