block: minor.

lib/primitives/block.js

@@ -562,7 +562,7 @@ Block.prototype.format = function format(view, height) {
     nonce: this.nonce,
     txs: this.txs.map((tx, i) => {
       return tx.format(view, null, i);
-    }, this)
+    })
   };
 };
 
@@ -600,7 +600,7 @@ Block.prototype.getJSON = function getJSON(network, view, height) {
     nonce: this.nonce,
     txs: this.txs.map((tx, i) => {
       return tx.getJSON(network, view, null, i);
-    }, this)
+    })
   };
 };