do not try to free null communicators

2017-05-22 17:15:14 -04:00
parent f73fd0625d
commit 081910adbc
1 changed files with 1 additions and 1 deletions
--- a/src/REPLICA/fix_neb.cpp
+++ b/src/REPLICA/fix_neb.cpp
@ -174,7 +174,7 @@ FixNEB::~FixNEB()
  memory->destroy(displacements);

  if (NEBLongRange) {
-    MPI_Comm_free(&rootworld);
+    if (rootworld != MPI_COMM_NULL) MPI_Comm_free(&rootworld);
    memory->destroy(nlenall);
  }
 }