fdo#72727: Revert "-Werror=unused-but-set-variable second try"

This reverts commit ccf7b15c0a5776c6431fdcb0c0e2b0f3935ae3dc.
(cherry picked from commit 61d958f37ed2aad6be2eab7bb507e0fb77716eec)

Change-Id: I3fbb037200d3df0e392b66bdd0c9cafc573e1a57
Reviewed-on: https://gerrit.libreoffice.org/9659
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
diff --git a/xmloff/source/chart/SchXMLTableContext.cxx b/xmloff/source/chart/SchXMLTableContext.cxx
index bab2a9f..6c0398c 100644
--- a/xmloff/source/chart/SchXMLTableContext.cxx
+++ b/xmloff/source/chart/SchXMLTableContext.cxx
@@ -856,6 +856,7 @@ void SchXMLTableHelper::switchRangesFromOuterToInternalIfNecessary(

    const OUString lcl_aCategoriesRange(aCategoriesRange);

    bool bCategoriesApplied = false;
    // translate ranges (using the map created before)
    for( tSchXMLLSequencesPerIndex::const_iterator aLSeqIt( rLSequencesPerIndex.begin());
         aLSeqIt != rLSequencesPerIndex.end(); ++aLSeqIt )
@@ -884,7 +885,12 @@ void SchXMLTableHelper::switchRangesFromOuterToInternalIfNecessary(
                }
                else
                {
                    if( !lcl_tableOfRangeMatches( aRange, rTable.aTableNameOfFile ))
                    if( lcl_tableOfRangeMatches( aRange, rTable.aTableNameOfFile ))
                    {
                        if( aLSeqIt->first.first == SCH_XML_CATEGORIES_INDEX )
                            bCategoriesApplied = true;
                    }
                    else
                    {
                        if( aLSeqIt->first.first == SCH_XML_CATEGORIES_INDEX )
                        {
@@ -895,6 +901,7 @@ void SchXMLTableHelper::switchRangesFromOuterToInternalIfNecessary(
                            SchXMLTools::copyProperties(
                                xOldSequenceProp, Reference< beans::XPropertySet >( xNewSequence, uno::UNO_QUERY ));
                            aLSeqIt->second->setValues( xNewSequence );
                            bCategoriesApplied = true;
                        }
                        else
                        {