ACTUALLY fixed urgent sequence deletion bug

io/media.cpp

@@ -10,7 +10,7 @@ extern "C" {
 
 #include "project/clip.h"
 
-Media::Media() : ready(false), preview_gen(NULL) {
+Media::Media() : ready(false), preview_gen(NULL), throbber(NULL) {
     ready_lock.lock();
 }
 
@@ -23,6 +23,9 @@ void Media::reset() {
 		preview_gen->cancel();
 		preview_gen->wait();
 	}
+	if (throbber != NULL) {
+		delete throbber;
+	}
     for (int i=0;i<video_tracks.size();i++) {
         delete video_tracks.at(i);
     }