Annotate OfflineAudioContext::start_rendering_sync as must_use

Author: orottier

src/context/offline.rs

@@ -120,6 +120,7 @@ impl OfflineAudioContext {
     /// # Panics
     ///
     /// Panics if this method is called multiple times
+    #[must_use]
     pub fn start_rendering_sync(&mut self) -> AudioBuffer {
         let renderer = match self.renderer.lock().unwrap().take() {
             None => panic!("InvalidStateError: Cannot call `startRendering` twice"),

src/node/waveshaper.rs

@@ -600,7 +600,7 @@ mod tests {
 
         let shaper = WaveShaperNode::new(&context, options);
 
-        context.start_rendering_sync();
+        let _ = context.start_rendering_sync();
 
         assert_eq!(shaper.curve(), Some(&[1.0][..]));
         assert_eq!(shaper.oversample(), OverSampleType::X2);
@@ -624,7 +624,7 @@ mod tests {
         shaper.set_curve(vec![2.0]);
         shaper.set_oversample(OverSampleType::X4);
 
-        context.start_rendering_sync();
+        let _ = context.start_rendering_sync();
 
         assert_eq!(shaper.curve(), Some(&[2.0][..]));
         assert_eq!(shaper.oversample(), OverSampleType::X4);
@@ -647,7 +647,7 @@ mod tests {
         shaper.set_curve(vec![2.0]);
         shaper.set_oversample(OverSampleType::X4);
 
-        context.start_rendering_sync();
+        let _ = context.start_rendering_sync();
 
         assert_eq!(shaper.curve(), Some(&[2.0][..]));
         assert_eq!(shaper.oversample(), OverSampleType::X4);