fix clippy warning

diff --git a/src/transcoder.rs b/src/transcoder.rs
index b37dfd8cb84a8dfeaa24191b82ed584d5f88e991..f0922c3c1c5927a40fcea7134bbc0a3b6aee4cb5 100644 (file)
--- a/src/transcoder.rs
+++ b/src/transcoder.rs
@@ -1046,11 +1046,7 @@ impl Transcoder {
                     if (sainfo == dainfo) && (icodec != "pcm" || oopts.enc_name.as_str() == "pcm") {
                         Box::new(AudioEncodeContext { encoder, cvt: None, sainfo: *sainfo, dainfo: *dainfo, vol: oopts.volume })
                     } else {
-                        let dchmap = if let Some(ret) = generate_channel_map(dainfo) {
-                                ret
-                            } else {
-                                return None;
-                            };
+                        let dchmap = generate_channel_map(dainfo)?;
                         let acvt = AudioConverter::new(sainfo, dainfo, dchmap);
                         Box::new(AudioEncodeContext { encoder, cvt: Some(acvt), sainfo: *sainfo, dainfo: *dainfo, vol: oopts.volume })
                     }