fixed possible NullReferenceException in extract method refactoring when local variable has no AsTypeClauseContext

Author: retailcoder

RetailCoder.VBE/UI/Refactorings/ExtractMethod/ExtractMethodPresenter.cs

@@ -201,7 +201,8 @@ private string GetExtractedMethod()
                 .Select(e => "    " + Tokens.Dim + ' ' + e.ambiguousIdentifier().GetText() + 
                     (e.LPAREN() == null 
                         ? string.Empty 
-                        : e.LPAREN().GetText() + (e.subscripts() == null ? string.Empty : e.subscripts().GetText()) + e.RPAREN().GetText()) + ' ' + e.asTypeClause().GetText());
+                        : e.LPAREN().GetText() + (e.subscripts() == null ? string.Empty : e.subscripts().GetText()) + e.RPAREN().GetText()) + ' ' + 
+                        (e.asTypeClause() == null ? string.Empty : e.asTypeClause().GetText()));
             var locals = string.Join(newLine, localConsts.Union(localVariables)
                             .Where(local => !_selectedCode.Contains(local)).ToArray()) + newLine;