lavfi/setpts: make use of AVFILTER_DEFINE_CLASS

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/setpts.c

@@ -225,12 +225,8 @@ static const AVOption options[] = {
 };
 
 #if CONFIG_SETPTS_FILTER
-static const AVClass setpts_class = {
-    .class_name = "setpts",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
+#define setpts_options options
+AVFILTER_DEFINE_CLASS(setpts);
 
 static const AVFilterPad avfilter_vf_setpts_inputs[] = {
     {
@@ -267,12 +263,8 @@ AVFilter avfilter_vf_setpts = {
 
 #if CONFIG_ASETPTS_FILTER
 
-static const AVClass asetpts_class = {
-    .class_name = "asetpts",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
+#define asetpts_options options
+AVFILTER_DEFINE_CLASS(asetpts);
 
 static const AVFilterPad asetpts_inputs[] = {
     {