Added virtual destructor to StyledWriter to avoid -Wall warning from g++

git-svn-id: http://jsoncpp.svn.sourceforge.net/svnroot/jsoncpp/trunk/jsoncpp/include@44 1f120ed1-78a5-a849-adca-83f0a9e25bb6
1 file changed
tree: ee4d6b975eb98a58103fc8fc0472af05a74dc02d
  1. json/