Merge fix for TRQ-2374 from master.

Author: Elizabeth Chan

src/lib/Libifl/pbsD_connect.c

@@ -1377,7 +1377,10 @@ int pbs_disconnect(
   pbs_disconnect_socket(sock);
 
   if (connection[connect].ch_errtxt != (char *)NULL)
+    {
     free(connection[connect].ch_errtxt);
+    connection[connect].ch_errtxt = (char *)NULL;
+    }
 
   connection[connect].ch_errno = 0;
   connection[connect].ch_inuse = FALSE;

src/scheduler.basl/af_server.c

@@ -1231,7 +1231,10 @@ server_disconnect(int connect)
   close(connection[connect].ch_socket);
 
   if (connection[connect].ch_errtxt != (char *)NULL)
+    {
     free(connection[connect].ch_errtxt);
+    connection[connect].ch_errtxt = (char *)NULL;
+    }
 
   connection[connect].ch_errno = 0;
 

src/scheduler.tcl/pbs_sched.c

@@ -204,7 +204,10 @@ server_disconnect(int connect)
   close(connection[connect].ch_socket);
 
   if (connection[connect].ch_errtxt != (char *)NULL)
+    {
     free(connection[connect].ch_errtxt);
+    connection[connect].ch_errtxt = (char *)NULL;
+    }
 
   connection[connect].ch_errno = 0;