remove unnecessary iteration if b.chunks is not set

timse · timse · commit 2f581385162e · 2017-02-14T21:16:09.000+11:00
diff --git a/lib/Chunk.js b/lib/Chunk.js
@@ -205,9 +205,9 @@ class Chunk {
 		other.chunks.length = 0;
 
 		other.blocks.forEach(b => {
-			b.chunks = (b.chunks || [this]).map(c => {
+			b.chunks = b.chunks ? b.chunks.map(c => {
 				return c === other ? this : c;
-			}, this);
+			}, this) : [this];
 			b.chunkReason = reason;
 			this.addBlock(b);
 		}, this);
