Fix pre-existing clippy failures

Author: alastor0325

mp4parse/src/lib.rs

@@ -5774,12 +5774,11 @@ fn read_video_sample_entry<T: Read>(
                         Status::ColrBadQuantityBMFF,
                     )?;
                     skip_box_content(&mut b)?;
-                } else {
-                    if let ParsedColourInformation::Supported(colr) = read_colr(&mut b, strictness)?
-                    {
-                        debug!("Parsed colr box: {colr:?}");
-                        colour_info = Some(colr);
-                    }
+                } else if let ParsedColourInformation::Supported(colr) =
+                    read_colr(&mut b, strictness)?
+                {
+                    debug!("Parsed colr box: {colr:?}");
+                    colour_info = Some(colr);
                 }
             }
             BoxType::MasteringDisplayColourVolumeBox => {

mp4parse/src/unstable.rs

@@ -239,14 +239,8 @@ pub fn create_sample_table(
 
         let start_decode = decode_time;
 
-        let start_composition_val: i64 = match start_composition {
-            Some(sc) => sc.0,
-            None => return None,
-        };
-        let end_composition_val: i64 = match end_composition {
-            Some(ec) => ec.0,
-            None => return None,
-        };
+        let start_composition_val: i64 = start_composition?.0;
+        let end_composition_val: i64 = end_composition?.0;
 
         let track_offset: i64 = track_offset_time.0;