sw: one more bind -> boost::bind

Change-Id: I6f3d36f0b0775559f3f0617d273a4f4595feda76

sw/source/core/doc/docbm.cxx

@@ -843,7 +843,7 @@ namespace sw { namespace mark
             find_if(
                 pMarkLow,
                 pMarkHigh,
-                boost::bind(equal_to<const IMark*>(), bind(&boost::shared_ptr<IMark>::get, _1), pMark) );
+                boost::bind(equal_to<const IMark*>(), boost::bind(&boost::shared_ptr<IMark>::get, _1), pMark) );
         if(pMarkFound != pMarkHigh)
             deleteMark(pMarkFound);
     }