Fix JSHint error in lib/compiler/passes/generate-bytecode.js

Fixes the following JSHint error:

  lib/compiler/passes/generate-bytecode.js: line 334, col 71, Expected an assignment or function call and instead saw an expression.

lib/compiler/passes/generate-bytecode.js

@@ -325,7 +325,7 @@ module.exports = function(ast) {
     action: function(node, context) {
       var env            = { },
           emitCall       = node.expression.type !== "sequence"
-                        || node.expression.elements.length === 0;
+                        || node.expression.elements.length === 0,
           expressionCode = generate(node.expression, {
             sp:     context.sp + (emitCall ? 1 : 0),
             env:    env,