Fixed small problem when compiling parallel AMDiS with cmake without Zoltan support.

AMDiS/src/parallel/ZoltanPartitioner.cc

@@ -9,6 +9,7 @@
 //
 // See also license.opensource.txt in the distribution.
 
+#ifdef HAVE_ZOLTAN
 
 #include <boost/lexical_cast.hpp>
 #include "parallel/ZoltanPartitioner.h"
@@ -535,3 +536,5 @@ namespace AMDiS {
 
 
 }
+
+#endif