chore: Tidy up array pop() with subsequent re-push() (#10099)

Author: absidue

lib/hls/hls_parser.js

@@ -4798,9 +4798,8 @@ shaka.hls.HlsParser = class {
         } else if (bitrates.length) {
           // It applies to every segment between it and the next EXT-X-BITRATE,
           // so we use the latest bitrate value
-          const prevBitrate = bitrates.pop();
+          const prevBitrate = bitrates[bitrates.length - 1];
           prevBitrate.duration += reference.endTime - reference.startTime;
-          bitrates.push(prevBitrate);
           reference.bandwidth = prevBitrate.bitrate;
         }
 

lib/util/ts_parser.js

@@ -771,10 +771,9 @@ shaka.util.TsParser = class {
           if (!data) {
             continue;
           }
-          previousPes = this.audioPes_.pop();
+          previousPes = this.audioPes_[this.audioPes_.length - 1];
           previousPes.data =
               shaka.util.Uint8ArrayUtils.concat(previousPes.data, data);
-          this.audioPes_.push(previousPes);
         }
       }
     }
@@ -806,10 +805,9 @@ shaka.util.TsParser = class {
           if (!data) {
             continue;
           }
-          previousPes = this.videoPes_.pop();
+          previousPes = this.videoPes_[this.videoPes_.length - 1];
           previousPes.data =
               shaka.util.Uint8ArrayUtils.concat(previousPes.data, data);
-          this.videoPes_.push(previousPes);
         }
       }
       if (naluProcessing) {