Fix potential issue if opal_hwloc_topology is NULL

cmr=v1.8.2:reviewer=jsquyres

This commit was SVN r32050.

orte/mca/ess/base/ess_base_fns.c

@@ -74,7 +74,10 @@ int orte_ess_base_proc_binding(void)
                              "%s Not bound at launch",
                              ORTE_NAME_PRINT(ORTE_PROC_MY_NAME)));
         /* we were not bound at launch */
-        if (NULL != opal_hwloc_topology) {
+        if (NULL == opal_hwloc_topology) {
+            /* there is nothing we can do, so just return */
+            return ORTE_SUCCESS;
+        }
         support = (struct hwloc_topology_support*)hwloc_topology_get_support(opal_hwloc_topology);
         /* get our node object */
         node = hwloc_get_root_obj(opal_hwloc_topology);
@@ -245,7 +248,6 @@ int orte_ess_base_proc_binding(void)
                 }
             }
         }
-        }
     } else {
         OPAL_OUTPUT_VERBOSE((5, orte_ess_base_framework.framework_output,
                              "%s Process bound at launch",