fix buffertool's fill calls

bitcore.js

@@ -19,6 +19,7 @@ module.exports.Peer = require('./Peer');
 module.exports.Block = require('./Block');
 module.exports.Connection = require('./Connection');
 module.exports.ScriptInterpreter = require('./ScriptInterpreter');
+module.exports.networks = require('./networks');
 
 
 if (typeof process.versions === 'undefined') {

networks.js

@@ -1,4 +1,5 @@
 var Put = require('bufferput');
+var buffertools = require('buffertools');
 var hex = function(hex) {return new Buffer(hex, 'hex');};
 
 exports.livenet = {
@@ -10,7 +11,7 @@ exports.livenet = {
     nonce: 2083236893,
     version: 1,
     hash: hex('6FE28C0AB6F1B372C1A6A246AE63F74F931E8365E15A089C68D6190000000000'),
-    prev_hash: new Buffer(32).fill(0),
+    prev_hash: buffertools.fill(new Buffer(32), 0),
     timestamp: 1231006505,
     merkle_root: hex('3BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A'),
     bits: 486604799
@@ -53,7 +54,7 @@ exports.testnet = {
     nonce: 414098458,
     version: 1,
     hash: hex('43497FD7F826957108F4A30FD9CEC3AEBA79972084E90EAD01EA330900000000'),
-    prev_hash: new Buffer(32).fill(0),
+    prev_hash: buffertools.fill(new Buffer(32), 0),
     timestamp: 1296688602,
     merkle_root: hex('3BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A'),
     bits: 486604799,

util/util.js

@@ -225,7 +225,8 @@ var decodeDiffBits = exports.decodeDiffBits = function (diffBits, asBigInt) {
 
   // Convert to buffer
   var diffBuf = target.toBuffer();
-  var targetBuf = new Buffer(32).fill(0);
+  var targetBuf = new Buffer(32);
+  buffertools.fill(targetBuf, 0);
   diffBuf.copy(targetBuf, 32-diffBuf.length);
   return targetBuf;
 };
@@ -325,11 +326,9 @@ var varStrBuf = exports.varStrBuf = function varStrBuf(s) {
 };
 
 // Initializations
-exports.NULL_HASH = new Buffer(32)
-buffertools.fill(exports.NULL_HASH, 0);
+exports.NULL_HASH = buffertools.fill(new Buffer(32), 0);
 exports.EMPTY_BUFFER = new Buffer(0);
-exports.ZERO_VALUE = new Buffer(8)
-buffertools.fill(exports.ZERO_VALUE, 0);
+exports.ZERO_VALUE = buffertools.fill(new Buffer(8), 0);
 var INT64_MAX = new Buffer('ffffffffffffffff', 'hex');
 exports.INT64_MAX = INT64_MAX;