fix cppcheck:nullPointerRedundantCheck commit

fix my commit 2d64fcf4
"cppcheck:nullPointerRedundantCheck"

Change-Id: I0875005d938b43a91e15c564a23d70cb097548a9

editeng/source/items/flditem.cxx

@@ -360,7 +360,7 @@ bool SvxFieldItem::operator==( const SfxPoolItem& rItem ) const
     const SvxFieldData* pOtherFld = static_cast<const SvxFieldItem&>(rItem).GetField();
     if( pField == pOtherFld )
         return true;
-    if( pOtherFld == nullptr )
+    if( pField == nullptr || pOtherFld == nullptr )
         return false;
     return ( pField->Type() == pOtherFld->Type() )
             && ( *pField == *pOtherFld );

editeng/source/items/frmitems.cxx

@@ -1666,7 +1666,7 @@ inline bool CmpBrdLn( const SvxBorderLine* pBrd1, const SvxBorderLine* pBrd2 )
 {
     if( pBrd1 == pBrd2 )
         return true;
-    if( pBrd1 == nullptr )
+    if( pBrd1 == nullptr || pBrd2 == nullptr)
         return false;
     return *pBrd1 == *pBrd2;
 }