editeng: warning C4701 potentially uninitialized local var

Change-Id: I611f0b5652722f0de38dfb82440823b832a6029c

editeng/source/items/frmitems.cxx

@@ -2037,7 +2037,7 @@ SfxPoolItem* SvxBoxItem::Create( SvStream& rStrm, sal_uInt16 nIVersion ) const
     SvxBoxItemLine aLineMap[4] = { SvxBoxItemLine::TOP, SvxBoxItemLine::LEFT,
                            SvxBoxItemLine::RIGHT, SvxBoxItemLine::BOTTOM };
 
-    sal_Int8 cLine;
+    sal_Int8 cLine(0);
     while (rStrm.good())
     {
         rStrm.ReadSChar( cLine );