[chore](trx-rs): address clippy warnings

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

src/trx-server/src/audio.rs

@@ -186,7 +186,7 @@ fn run_capture(
 
     loop {
         let has_receivers = tx.receiver_count() > 0
-            || pcm_tx.as_ref().map_or(false, |p| p.receiver_count() > 0);
+            || pcm_tx.as_ref().is_some_and(|p| p.receiver_count() > 0);
 
         if has_receivers && !capturing {
             let _ = stream.play();
@@ -592,7 +592,7 @@ fn resample_to_12k(samples: &[f32], sample_rate: u32) -> Option<Vec<f32>> {
     if sample_rate == FT8_SAMPLE_RATE {
         return Some(samples.to_vec());
     }
-    if sample_rate % FT8_SAMPLE_RATE != 0 {
+    if !sample_rate.is_multiple_of(FT8_SAMPLE_RATE) {
         return None;
     }
     let factor = (sample_rate / FT8_SAMPLE_RATE) as usize;
@@ -768,7 +768,7 @@ async fn handle_audio_client(
 
     // Send stream info
     let info_json = serde_json::to_vec(&stream_info)
-        .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+        .map_err(std::io::Error::other)?;
     write_audio_msg(&mut writer, AUDIO_MSG_STREAM_INFO, &info_json).await?;
 
     // Send APRS history to newly connected client.

src/trx-server/src/decode/aprs.rs

@@ -281,12 +281,12 @@ impl Demodulator {
             return None;
         }
         let mut bytes = vec![0u8; byte_len];
-        for i in 0..byte_len {
+        for (i, out) in bytes.iter_mut().enumerate() {
             let mut b: u8 = 0;
             for j in 0..8 {
                 b |= self.frame_bits[i * 8 + j] << j;
             }
-            bytes[i] = b;
+            *out = b;
         }
 
         let payload = &bytes[..byte_len - 2];
@@ -381,7 +381,7 @@ fn parse_aprs(ax25: &Ax25Frame) -> AprsPacket {
     let path = ax25
         .digis
         .iter()
-        .map(|d| format_call(d))
+        .map(format_call)
         .collect::<Vec<_>>()
         .join(",");
     let info = &ax25.info;
@@ -481,7 +481,7 @@ fn parse_aprs_compressed(pos: &[u8]) -> Option<(f64, f64, char, char)> {
     for i in 0..4 {
         let lc = pos[1 + i] as i32 - 33;
         let xc = pos[5 + i] as i32 - 33;
-        if lc < 0 || lc > 90 || xc < 0 || xc > 90 {
+        if !(0..=90).contains(&lc) || !(0..=90).contains(&xc) {
             return None;
         }
         lat_val = lat_val * 91 + lc as u32;