Edit accessibility: intended to use dynamic cast here

This is not necessarily a multilineedit.

Change-Id: Ibcbc104513bc6523e61efa5f3ff22efd3422e036

accessibility/source/standard/vclxaccessibleedit.cxx

@@ -311,7 +311,7 @@ Sequence< PropertyValue > VCLXAccessibleEdit::getCharacterAttributes( sal_Int32
     Sequence< PropertyValue > aProperties = VCLXAccessibleTextComponent::getCharacterAttributes( nIndex, aRequestedAttributes );
 
     // Handle multiline edit character properties
-    VclPtr<VclMultiLineEdit> pMulitLineEdit = GetAs< VclMultiLineEdit >();
+    VclPtr<VclMultiLineEdit> pMulitLineEdit = GetAsDynamic< VclMultiLineEdit >();
     if ( pMulitLineEdit )
     {
         ExtTextEngine* pTextEngine = pMulitLineEdit->GetTextEngine();