********>Bugfix 5:
Author:  Scott Brozell
Date:  September 17, 2007

Program:  dock6

Description:  DOCK3.5 score frees some memory twice during program exit.
This has been innocuous, but recent, probably 2.5 and later, GNU C
libraries detect the error and abort.  Here is the start of the error:
*** glibc detected *** ./dock6: double free or corruption (!prev):

Fix:  make the following changes to the file src/dock/score_chemgrid.cpp
-------------------------------------------------------------------------
*** src/dock/score_chemgrid.cpp	15 Dec 2006 01:34:41 -0000	1.22.2.2
--- src/dock/score_chemgrid.cpp	17 Sep 2007 20:22:51 -0000
***************
*** 268,276 ****
  
      phi = NULL;
  
-     vdwA = NULL;
-     vdwB = NULL;
- 
  }
  /************************************************/
  Chemgrid_Score::~Chemgrid_Score()
--- 268,273 ----
***************
*** 285,293 ****
  
      delete[]phi;
  
-     delete[]vdwA;
-     delete[]vdwB;
- 
  }
  /************************************************/
  void
--- 282,287 ----
--------------------------------------------------------------------------
Workaround:  ignore the error termination.