Fix previous commit

...4b4a7c0d "Revert a fix that can never have
worked in the first place?"---which presumably did work after all, as Noel
thankfully pointed out to me,
<http://lists.freedesktop.org/archives/libreoffice/2015-September/070193.html>
"Re: [Libreoffice-commits] core.git: basic/source 'Revert a fix that can never
have worked in the first place?'"

Change-Id: I411bfaacbfebf50589290c6a3040d0300c256439

basic/source/comp/exprtree.cxx

@@ -215,7 +215,8 @@ SbiExprNode* SbiExpression::Term( const KeywordSymbolInfo* pKeywordSymbolInfo )
         return new SbiExprNode( aSym );
     }
     // no keywords allowed from here on!
-    if( SbiTokenizer::IsKwd( eTok ) )
+    if( SbiTokenizer::IsKwd( eTok )
+        && (!pParser->IsCompatible() || eTok != INPUT) )
     {
         pParser->Error( ERRCODE_BASIC_SYNTAX );
         bError = true;