Simplify

lib/nghttp2_session.c

@@ -2556,6 +2556,8 @@ static int session_after_frame_sent2(nghttp2_session *session) {
   nghttp2_bufs *framebufs = &aob->framebufs;
   nghttp2_frame *frame;
   nghttp2_mem *mem;
+  nghttp2_stream *stream;
+  nghttp2_data_aux_data *aux_data;
 
   mem = &session->mem;
   frame = &item->frame;
@@ -2578,9 +2580,9 @@ static int session_after_frame_sent2(nghttp2_session *session) {
     active_outbound_item_reset(&session->aob, mem);
 
     return 0;
-  } else {
-    nghttp2_stream *stream;
-    nghttp2_data_aux_data *aux_data;
+  }
+
+  /* DATA frame */
 
   aux_data = &item->aux_data.data;
 
@@ -2618,10 +2620,6 @@ static int session_after_frame_sent2(nghttp2_session *session) {
   aob->item = NULL;
   active_outbound_item_reset(&session->aob, mem);
 
-    return 0;
-  }
-  /* Unreachable */
-  assert(0);
   return 0;
 }