toggle premiere flag off when all pieces available

src/torrent.cpp

@@ -2318,6 +2318,15 @@ bool is_downloading_state(int const st)
 				p->announce_piece(index);
 				p->send_suggest(index);
 			}
+			bool all_available = true;
+			for (auto& x: premiere_map) {
+				if (x.second == true) {
+					all_available = false;
+					break;
+				}
+			}
+			premiere_mode = !all_available;
+
 		}
 		else
 		{