From 14e8e4f8489bb333c60055f1c1bfbca03b19cfcc Mon Sep 17 00:00:00 2001
From: Thomas Witkowski <thomas.witkowski@gmx.de>
Date: Tue, 15 May 2012 13:14:47 +0000
Subject: [PATCH] Small bugfix.

---
 AMDiS/src/parallel/PetscSolverGlobalMatrix.cc | 5 ++++-
 AMDiS/src/parallel/PetscSolverGlobalMatrix.h  | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/AMDiS/src/parallel/PetscSolverGlobalMatrix.cc b/AMDiS/src/parallel/PetscSolverGlobalMatrix.cc
index b7817352..aa99d09e 100644
--- a/AMDiS/src/parallel/PetscSolverGlobalMatrix.cc
+++ b/AMDiS/src/parallel/PetscSolverGlobalMatrix.cc
@@ -492,7 +492,10 @@ namespace AMDiS {
 
     MatDestroy(&matIntInt);
     KSPDestroy(&kspInterior);
-    VecDestroy(&petscSolVec);
+
+    if (petscSolVec != PETSC_NULL) 
+      VecDestroy(&petscSolVec);
+    petscSolVec = PETSC_NULL;
   }
 
 
diff --git a/AMDiS/src/parallel/PetscSolverGlobalMatrix.h b/AMDiS/src/parallel/PetscSolverGlobalMatrix.h
index c04abe1e..caf3c976 100644
--- a/AMDiS/src/parallel/PetscSolverGlobalMatrix.h
+++ b/AMDiS/src/parallel/PetscSolverGlobalMatrix.h
@@ -36,6 +36,7 @@ namespace AMDiS {
   public:
     PetscSolverGlobalMatrix()
       : PetscSolver(),
+	petscSolVec(PETSC_NULL),
 	d_nnz(NULL),
 	o_nnz(NULL),
 	lastMeshNnz(0),
-- 
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