small bugs in PetscWrapper corrected

AMDiS/src/parallel/PetscHelper.h

@@ -123,3 +123,5 @@ namespace AMDiS
 
   } // end namespace Parallel
 } // end namespace AMDiS
+
+#endif

AMDiS/src/utility/PetscWrapper.h

@@ -66,7 +66,7 @@ namespace AMDiS
 #if (PETSC_VERSION_MINOR >= 5)
       return KSPGetOperators(ksp, Amat, Pmat);
 #else
-      return KSPGetOperators(ksp, Amat, Pmat, SAME_NONZERO_PATTERN);
+      return KSPGetOperators(ksp, Amat, Pmat, PETSC_NULL);
 #endif
     }