Edited Issue: Inserting a semicolon in an incorrect place causes an exception to activity log [1346]

type the following:
```
console.log('Hello world';
```
I got here by accident when I failed to close paren.

LOG:
<record>830</record>
<time>2014/08/13 23:50:52.931</time>
<type>Error</type>
<source>Editor or Editor Extension</source>
<description>System.ArgumentOutOfRangeException: Count must be positive and count must refer to a location within the string/array/collection.
Parameter name: count
at System.String.IndexOfAny(Char[] anyOf, Int32 startIndex, Int32 count)
at Microsoft.NodejsTools.Formatting.FormattingVisitor.FixStatementIndentation(Int32 prevStart, Int32 end)
at Microsoft.NodejsTools.Formatting.FormattingVisitor.WalkStatements(Int32 startIndex, IEnumerable`1 stmts, Boolean isMultiLine)
at Microsoft.NodejsTools.Formatting.FormattingVisitor.Format(JsAst ast)
at Microsoft.NodejsTools.Formatting.Formatter.GetEdits(String code, FormattingOptions options, JsAst ast, Boolean onEnter)
at Microsoft.NodejsTools.Formatting.Formatter.GetEditsAfterKeystroke(String code, Int32 position, Char ch, FormattingOptions options)
at Microsoft.NodejsTools.EditFilter.FormatAfterTyping(Char ch)
at Microsoft.NodejsTools.EditFilter.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at NoahRichards.AlignAssignments.CommandFilter.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.PowerTools.ColorPrinting.CommandFilter.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.PeekF1.CommandFilter.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Text.Formatting.Implementation.CommandFilter.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.Exec(Guid& pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
at Microsoft.VisualStudio.Editor.Implementation.VsKeyboardFilter.SendCommand(Guid cmdGroup, UInt32 cmdID, Object inParam)
at Microsoft.VisualStudio.Editor.Implementation.VsKeyboardFilter.TextInput(TextCompositionEventArgs args)
at Microsoft.VisualStudio.Text.Editor.Implementation.KeyProcessorDispatcher.<DispatchTextInputEvents>b__0(KeyProcessor p, TextCompositionEventArgs args)
at Microsoft.VisualStudio.Text.Editor.Implementation.KeyProcessorDispatcher.<>c__DisplayClass1e`1.<Dispatch>b__1a()
at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)</description>