fix linting errors

lib/6to5/generator.js

@@ -21,6 +21,7 @@ CodeGenerator.prototype.generate = function (ast, opts) {
 
 CodeGenerator.prototype.buildPrint = function (parent) {
   var self = this;
+
   var print = function (node) {
     return self.print(node, parent);
   };
@@ -138,7 +139,6 @@ CodeGenerator.prototype.ArrowFunctionExpression = function (node, print) {
 
 CodeGenerator.prototype.MethodDefinition = function (node, print) {
   throw new Error("MethodDefinition");
-  return;
 };
 
 CodeGenerator.prototype.YieldExpression = function (node, print) {
@@ -189,7 +189,7 @@ CodeGenerator.prototype.BlockStatement = function (node, print) {
   if (body.length === 0) {
     return "{}";
   } else {
-    return "{\n" + this.indent(print.sequence(body)) + "\n}"
+    return "{\n" + this.indent(print.sequence(body)) + "\n}";
   }
 };
 
@@ -223,7 +223,6 @@ CodeGenerator.prototype.ObjectExpression =
 CodeGenerator.prototype.ObjectPattern = function (node, print) {
   var allowBreak = false;
   var indent     = this.indent;
-  var print      = this.buildPrint(node);
   var parts      = [len > 0 ? "{\n" : "{"];
   var len        = node.properties.length;
 
@@ -267,7 +266,6 @@ CodeGenerator.prototype.ArrayExpression =
 CodeGenerator.prototype.ArrayPattern = function (node, print) {
   var elems = node.elements;
   var parts = ["["];
-  var print = this.buildPrint(node);
   var len   = elems.length;
 
   _.each(elems, function(elem, i) {
@@ -358,7 +356,6 @@ CodeGenerator.prototype.NewExpression = function (node, print) {
 };
 
 CodeGenerator.prototype.VariableDeclaration = function (node, print, parent) {
-  var print = print;
   var code = node.kind + " ";
   var maxLen = 0;
 
@@ -371,6 +368,7 @@ CodeGenerator.prototype.VariableDeclaration = function (node, print, parent) {
   switch (maxLen) {
     case 0:
       code += printed[0];
+      break;
 
     default:
       code += printed.join(",\n  ");
@@ -410,7 +408,7 @@ CodeGenerator.prototype.ForStatement = function (node, print) {
   var code = "for (";
   code += print(node.init) + "; ";
   code += print(node.test) + "; ";
-  code += print(node.update)
+  code += print(node.update);
   code += ") ";
   code += print(node.body);
   return code;
@@ -559,7 +557,7 @@ CodeGenerator.prototype._method = function (kind, key, value, print) {
   );
 
   return parts.join("");
-}
+};
 
 CodeGenerator.prototype.MethodDefinition = function (node, print) {
   var parts = [];