sw_redlinehide_3: fix SwAccessibleParagraph::getRunAttributes() index

... check, which should accept the past-the-last-char index, because
as the comments say it returns the hard attributes of the SwTextNode
as well, so it should work for empty paragraphs too.

(similar fix was done in getCharacterAttributes() in IA2)

Change-Id: I01e1a8f66f103b63584e88ce785ac2044c5db2b9

sw/source/core/access/accpara.cxx

@@ -1415,7 +1415,7 @@ uno::Sequence<PropertyValue> SwAccessibleParagraph::getCharacterAttributes(
 
     const OUString& rText = GetString();
 
-    if( ! IsValidChar( nIndex, rText.getLength()+1 ) )
+    if (!IsValidPosition(nIndex, rText.getLength()))
         throw lang::IndexOutOfBoundsException();
 
     bool bSupplementalMode = false;
@@ -1844,7 +1844,7 @@ uno::Sequence< PropertyValue > SwAccessibleParagraph::getRunAttributes(
 
     {
         const OUString& rText = GetString();
-        if ( !IsValidChar( nIndex, rText.getLength() ) )
+        if (!IsValidPosition(nIndex, rText.getLength()))
         {
             throw lang::IndexOutOfBoundsException();
         }