No need to check for NULL value before deleting.

Change-Id: Ic1e6ecea3ba3ba4ed07760557b04bc07bd963532

sc/source/filter/xcl97/XclExpChangeTrack.cxx

@@ -593,7 +593,6 @@ XclExpChTrAction::XclExpChTrAction(
 
 XclExpChTrAction::~XclExpChTrAction()
 {
-    if( pAddAction )
     delete pAddAction;
 }
 
@@ -749,9 +748,7 @@ XclExpChTrCellContent::XclExpChTrCellContent(
 
 XclExpChTrCellContent::~XclExpChTrCellContent()
 {
-    if( pOldData )
     delete pOldData;
-    if( pNewData )
     delete pNewData;
 }
 
@@ -1476,7 +1473,6 @@ XclExpChangeTrack::~XclExpChangeTrack()
         aActionStack.pop();
     }
 
-    if( pTempDoc )
     delete pTempDoc;
 }