fix stop rendering on close

src/common/blur.cpp

@@ -29,6 +29,7 @@ bool c_blur::initialise(bool _verbose, bool _using_preview) {
 	using_preview = _using_preview;
 
 	std::atexit([] {
+		rendering.stop_rendering();
 		blur.cleanup();
 	});
 

src/common/rendering.cpp

@@ -362,6 +362,7 @@ void c_render::render() {
 }
 
 void c_rendering::stop_rendering() {
+	// stop vspipe
 	TerminateProcess(vspipe_pi.hProcess, 0);
 
 	// send wm_close to ffmpeg so that it can gracefully stop

src/gui/gui.cpp

@@ -133,5 +133,4 @@ void gui::run() {
     glfwTerminate();
 
     open = false;
-    rendering.stop_rendering();
 }