don't try to use a dead btl..

This commit was SVN r12456.

ompi/mca/pml/dr/pml_dr_vfrag.c

@@ -88,6 +88,8 @@ static void mca_pml_dr_vfrag_wdog_timeout(int fd, short event, void* data)
             opal_output(0, "%s:%d:%s: failing already failed BTL", __FILE__, __LINE__, __func__);
         }
         mca_pml_dr_vfrag_reset(vfrag);
+    } else if(NULL == vfrag->bml_btl->btl) { 
+        mca_pml_dr_vfrag_reset(vfrag);
     }
 
     /* back off watchdog timer */
@@ -129,6 +131,8 @@ static void mca_pml_dr_vfrag_ack_timeout(int fd, short event, void* data)
             opal_output(0, "%s:%d:%s: failing already failed BTL", __FILE__, __LINE__, __func__);
         }   
         mca_pml_dr_vfrag_reset(vfrag);
+    } else if(NULL == vfrag->bml_btl->btl) { 
+        mca_pml_dr_vfrag_reset(vfrag);
     }
 
     /* back off ack timer */