VAAPI: remove useless variable

modules/codec/avcodec/vaapi.c

@@ -247,9 +247,8 @@ static int CreateDecodingContext( vlc_va_vaapi_t *p_va, void **pp_hw_ctx, vlc_fo
     p_va->conn->lock();
 
     /* Create surfaces */
-    int i_count = p_va->i_surface_count;
     VASurfaceID *pi_surface_id = CreateSurfaces( p_va->conn, i_width, i_height,
-                                                VA_RT_FORMAT_YUV420, i_count );
+                                                VA_RT_FORMAT_YUV420, p_va->i_surface_count );
     if( pi_surface_id == NULL )
     {
         p_va->i_surface_count = 0;