Increase test coverage a touch

lib/handlebars/compiler/javascript-compiler.js

@@ -99,6 +99,7 @@ JavaScriptCompiler.prototype = {
     // Flush any trailing content that might be pending.
     this.pushSource('');
 
+    /* istanbul ignore next */
     if (this.stackSlot || this.inlineStack.length || this.compileStack.length) {
       throw new Exception('Compile completed with content left on stack');
     }
@@ -551,10 +552,6 @@ JavaScriptCompiler.prototype = {
     var helper = this.setupHelper(paramSize, name);
 
     var lookup = (isSimple ? helper.name + ' || ' : '') + nonHelper + ' || helperMissing';
-    if (helper.paramsInit) {
-      lookup += ',' + helper.paramsInit;
-    }
-
     this.push('((' + lookup + ').call(' + helper.callParams + '))');
 
     // Always flush subexpressions. This is both to prevent the compounding size issue that
@@ -849,6 +846,7 @@ JavaScriptCompiler.prototype = {
       return item.value;
     } else {
       if (!inline) {
+        /* istanbul ignore next */
         if (!this.stackSlot) {
           throw new Exception('Invalid stack pop');
         }