[plugins] cgi: minor improvement (iterator by reference is enough)
[plugins] cgi: minor improvement (iterator by reference is enough)

christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,xzero/x0