ndk: Fix clippy warnings in ndk::midi

Author: paxbun

ndk/src/midi/mod.rs

@@ -153,7 +153,7 @@ impl MidiDevice {
     /// Opens the input port so that the client can send data to it. Note that the returned
     /// [`MidiInputPort`] is intentionally `!Send` and `!Sync`; please use
     /// [`safe::SafeMidiDevice::open_safe_input_port`] if you need the thread-safe version.
-    pub fn open_input_port(&self, port_number: i32) -> Result<MidiInputPort> {
+    pub fn open_input_port(&self, port_number: i32) -> Result<MidiInputPort<'_>> {
         unsafe {
             let input_port =
                 construct(|res| ffi::AMidiInputPort_open(self.ptr.as_ptr(), port_number, res))?;
@@ -164,7 +164,7 @@ impl MidiDevice {
     /// Opens the output port so that the client can receive data from it. Note that the returned
     /// [`MidiOutputPort`] is intentionally `!Send` and `!Sync`; please use
     /// [`safe::SafeMidiDevice::open_safe_output_port`] if you need the thread-safe version.
-    pub fn open_output_port(&self, port_number: i32) -> Result<MidiOutputPort> {
+    pub fn open_output_port(&self, port_number: i32) -> Result<MidiOutputPort<'_>> {
         unsafe {
             let output_port =
                 construct(|res| ffi::AMidiOutputPort_open(self.ptr.as_ptr(), port_number, res))?;