Closed Unassigned: Null reference bug in XLWorkbook_Load [9426]

This manifests itself when opening XSLX files generated by Microsoft ReportViewer control.


XLWorkbook_Load.cs line 857:
```
xlCell._cellValue = cell.InlineString != null ? cell.InlineString.Text.Text.FixNewLines() : String.Empty;
```

should be changed to:

```
xlCell._cellValue = cell.InlineString != null && cell.InlineString.Text != null ? cell.InlineString.Text.Text.FixNewLines() : String.Empty;
```
Comments: Added the fix. Thanks.