Revert "EventLoop in OfflineAudioContext: add fast path when no suspend/events"

Main reason is that unhandled events are buffered and may take up too
much memory in large scale offline processing.

This reverts commit 38cae80.

Author: orottier

src/render/thread.rs

@@ -252,31 +252,22 @@ impl RenderThread {
         // Handle initial control messages
         self.handle_control_messages();
 
-        // Fast path when
-        // - no suspensions scheduled
-        // - no script processor (so no event handling needed during rendering)
-        if suspend_callbacks.is_empty() {
-            for _ in 0..num_frames {
-                self.render_offline_quantum(&mut buffer);
+        for quantum in 0..num_frames {
+            // Suspend at given times and run callbacks
+            if suspend_callbacks.first().map(|&(q, _)| q) == Some(quantum) {
+                let callback = suspend_callbacks.remove(0).1;
+                (callback)(context);
+
+                // Handle any control messages that may have been submitted by the callback
+                self.handle_control_messages();
             }
-        } else {
-            for quantum in 0..num_frames {
-                // Suspend at given times and run callbacks
-                if suspend_callbacks.first().map(|&(q, _)| q) == Some(quantum) {
-                    let callback = suspend_callbacks.remove(0).1;
-                    (callback)(context);
-
-                    // Handle any control messages that may have been submitted by the callback
-                    self.handle_control_messages();
-                }
 
-                self.render_offline_quantum(&mut buffer);
+            self.render_offline_quantum(&mut buffer);
 
-                let events_were_handled = event_loop.handle_pending_events();
-                if events_were_handled {
-                    // Handle any control messages that may have been submitted by the handler
-                    self.handle_control_messages();
-                }
+            let events_were_handled = event_loop.handle_pending_events();
+            if events_were_handled {
+                // Handle any control messages that may have been submitted by the handler
+                self.handle_control_messages();
             }
         }