fixes #4

AMDiS/src/parallel/PetscSolverGlobalMatrix.cc

@@ -408,7 +408,7 @@ namespace AMDiS { namespace Parallel {
 
     MatNullSpace matNullspace;
     Vec nullspaceBasis;
-    SystemVector *basisVec;
+    SystemVector *basisVec = NULL;
     if (nullspace.size() > 0 ||
 	hasConstantNullspace ||
 	constNullspaceComponent.size() > 0) {
@@ -471,9 +471,7 @@ namespace AMDiS { namespace Parallel {
     }
     
     // delete allocated memory
-    if ((nullspace.size() > 0 || hasConstantNullspace) && constNullspaceComponent.size() > 0) {
-	delete basisVec;
-    }
+    delete basisVec;
 
     // === Transfere values from PETSc's solution vectors to the DOF vectors. ===
     PetscScalar *vecPointer;