Commented Unassigned: NullreferenceException [20417]

In case of invalid syntax JS like something.call(),.call() (see more complete example below) a NullReferenceException is throws (see callstack below).
Code sample
```
if (window.FileReader) {
$(".j_drop", this.get_element()).on("dragover", RFERL.UI.Web.Controls.FileUploaderBehavior._cancel)
.on("dragenter", RFERL.UI.Web.Controls.FileUploaderBehavior._cancel),
.on("drop", Function.createDelegate(this, this._onDrop));
}
```
Call stack
```
Error 363 The "AjaxMin" task failed unexpectedly.
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Ajax.Utilities.JSParser.ParseMemberExpression(AstNode expression, List`1 newContexts)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpression(AstNode leftHandSide, Boolean single, Boolean bCanAssign, JSToken inToken)
at Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement)
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseBlock()
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseIfStatement()
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseFunctionBody(Block body)
at Microsoft.Ajax.Utilities.JSParser.ParseFunction(FunctionType functionType, Context fncCtx)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteralProperty(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteral(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpression(AstNode leftHandSide, Boolean single, Boolean bCanAssign, JSToken inToken)
at Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement)
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseStatements(Block block)
at Microsoft.Ajax.Utilities.JSParser.InternalParse()
at Microsoft.Ajax.Utilities.JSParser.Parse(DocumentContext sourceContext)
at Microsoft.Ajax.Utilities.Minifier.MinifyJavaScript(String source, CodeSettings codeSettings)
at Microsoft.Ajax.Minifier.Tasks.AjaxMin.MinifyJavaScript(String sourceCode, String sourceName, String outputPath, String mapFilePath)
at Microsoft.Ajax.Minifier.Tasks.AjaxMin.MinifyJavaScript()
at Microsoft.Ajax.Minifier.Tasks.AjaxMin.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext() D:\Code\common\RFERL.WebControls\RFERL.UI.WebControls.csproj 617 5 RFERL.UI.WebControls

```
Comments: ** Comment from web user: ronlo **

Excellent catch! Fixed in next release.