fix conditional format

lib/script.js

@@ -171,7 +171,10 @@ Script.prototype.toString = function() {
 Script.prototype.isOpReturn = function() {
   if (this.chunks[0] === Opcode('OP_RETURN').toNumber() &&
     (this.chunks.length === 1 ||
-      (this.chunks.length === 2 && this.chunks[1].buf && this.chunks[1].buf.length <= 40 && this.chunks[1].length === this.chunks.len))) {
+      (this.chunks.length === 2 &&
+        this.chunks[1].buf &&
+        this.chunks[1].buf.length <= 40 &&
+        this.chunks[1].length === this.chunks.len))) {
     return true;
   } else {
     return false;
@@ -179,7 +182,11 @@ Script.prototype.isOpReturn = function() {
 };
 
 Script.prototype.isPublicKeyHashOut = function() {
-  if (this.chunks[0] === Opcode('OP_DUP').toNumber() && this.chunks[1] === Opcode('OP_HASH160').toNumber() && this.chunks[2].buf && this.chunks[3] === Opcode('OP_EQUALVERIFY').toNumber() && this.chunks[4] === Opcode('OP_CHECKSIG').toNumber()) {
+  if (this.chunks[0] === Opcode('OP_DUP').toNumber() &&
+    this.chunks[1] === Opcode('OP_HASH160').toNumber() &&
+    this.chunks[2].buf &&
+    this.chunks[3] === Opcode('OP_EQUALVERIFY').toNumber() &&
+    this.chunks[4] === Opcode('OP_CHECKSIG').toNumber()) {
     return true;
   } else {
     return false;
@@ -187,7 +194,9 @@ Script.prototype.isPublicKeyHashOut = function() {
 };
 
 Script.prototype.isPublicKeyHashIn = function() {
-  if (this.chunks.length === 2 && this.chunks[0].buf && this.chunks[1].buf) {
+  if (this.chunks.length === 2 &&
+    this.chunks[0].buf &&
+    this.chunks[1].buf) {
     return true;
   } else {
     return false;
@@ -195,7 +204,11 @@ Script.prototype.isPublicKeyHashIn = function() {
 };
 
 Script.prototype.isScriptHashOut = function() {
-  if (this.chunks.length === 3 && this.chunks[0] === Opcode('OP_HASH160').toNumber() && this.chunks[1].buf && this.chunks[1].buf.length === 20 && this.chunks[2] === Opcode('OP_EQUAL').toNumber()) {
+  if (this.chunks.length === 3 &&
+    this.chunks[0] === Opcode('OP_HASH160').toNumber() &&
+    this.chunks[1].buf &&
+    this.chunks[1].buf.length === 20 &&
+    this.chunks[2] === Opcode('OP_EQUAL').toNumber()) {
     return true;
   } else {
     return false;