[compositionalfluidstate.hh]

Add missing header otherwise gcc 4.3 did not compile.
(reviewed by vishal)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@9098 2fb0f335-1f38-0410-981e-8018bf24f1b0

dumux/material/fluidstates/compositionalfluidstate.hh

@@ -27,6 +27,7 @@
 #define DUMUX_COMPOSITIONAL_FLUID_STATE_HH
 
 #include <algorithm>
+#include <cmath>
 
 #include <dune/common/exceptions.hh>