Fix clippy warnings (#214)

* Fix clippy warnings

* Fix implicitly elided lifetimes

src/input/adapters/cached/util.rs

@@ -335,7 +335,7 @@ impl MediaSource for ToAudioBytes {
 
 #[inline]
 fn write_out(
-    source: &AudioBufferRef,
+    source: &AudioBufferRef<'_>,
     target: &mut [u8],
     source_pos: &mut Range<usize>,
     spillover: &mut Vec<f32>,

src/input/codecs/opus.rs

@@ -133,7 +133,7 @@ impl Decoder for OpusDecoder {
         FinalizeResult::default()
     }
 
-    fn last_decoded(&self) -> AudioBufferRef {
+    fn last_decoded(&self) -> AudioBufferRef<'_> {
         self.buf.as_audio_buffer_ref()
     }
 }

src/input/live_input.rs

@@ -136,7 +136,7 @@ impl LiveInput {
     /// Tries to get any information about this audio stream acquired during parsing.
     ///
     /// Only exists when this input is [`LiveInput::Parsed`].
-    pub fn metadata(&mut self) -> Result<Metadata, MetadataError> {
+    pub fn metadata(&mut self) -> Result<Metadata<'_>, MetadataError> {
         if let Some(parsed) = self.parsed_mut() {
             Ok(parsed.into())
         } else {

src/input/mod.rs

@@ -205,8 +205,7 @@ impl Input {
     /// will always fail with [`AudioStreamError::Unsupported`].
     pub async fn aux_metadata(&mut self) -> Result<AuxMetadata, AuxMetadataError> {
         match self {
-            Self::Lazy(ref mut composer) => composer.aux_metadata().await.map_err(Into::into),
-            Self::Live(_, Some(ref mut composer)) =>
+            Self::Lazy(ref mut composer) | Self::Live(_, Some(ref mut composer)) =>
                 composer.aux_metadata().await.map_err(Into::into),
             Self::Live(_, None) => Err(AuxMetadataError::NoCompose),
         }
@@ -216,7 +215,7 @@ impl Input {
     ///
     /// Only exists when this input is both [`Self::Live`] and has been fully parsed.
     /// In general, you probably want to use [`Self::aux_metadata`].
-    pub fn metadata(&mut self) -> Result<Metadata, MetadataError> {
+    pub fn metadata(&mut self) -> Result<Metadata<'_>, MetadataError> {
         if let Self::Live(live, _) = self {
             live.metadata()
         } else {