Fix incorrect stack pop when replacing literals

lib/handlebars/compiler/javascript-compiler.js

@@ -687,7 +687,8 @@ JavaScriptCompiler.prototype = {
   replaceStack: function(callback) {
     var prefix = '',
         inline = this.isInline(),
-        stack;
+        stack,
+        usedLiteral;
 
     // If we are currently inline then we want to merge the inline statement into the
     // replacement statement via ','
@@ -697,6 +698,7 @@ JavaScriptCompiler.prototype = {
       if (top instanceof Literal) {
         // Literals do not need to be inlined
         stack = top.value;
+        usedLiteral = true;
       } else {
         // Get or create the current stack name for use by the inline
         var name = this.stackSlot ? this.topStackName() : this.incrStack();
@@ -711,7 +713,7 @@ JavaScriptCompiler.prototype = {
     var item = callback.call(this, stack);
 
     if (inline) {
-      if (this.inlineStack.length || this.compileStack.length) {
+      if (!usedLiteral) {
         this.popStack();
       }
       this.push('(' + prefix + item + ')');