iof/base: fix misc memory leak

as reported by Coverity with CID 1196732

opal/util/basename.c

@@ -10,7 +10,7 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2009-2014 Cisco Systems, Inc.  All rights reserved.
- * Copyright (c) 2014      Research Organization for Information Science
+ * Copyright (c) 2014-2015 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2014      Intel, Inc. All rights reserved.
  * $COPYRIGHT$
@@ -103,6 +103,9 @@ char* opal_dirname(const char* filename)
 {
 #if defined(HAVE_DIRNAME) || OPAL_HAVE_DIRNAME
     char* safe_tmp = strdup(filename), *result;
+    if (NULL == safe_tmp) {
+        return NULL;
+    }
     result = strdup(dirname(safe_tmp));
     free(safe_tmp);
     return result;
@@ -122,6 +125,9 @@ char* opal_dirname(const char* filename)
             }
             if( p != filename ) {
                 char* ret = (char*)malloc( p - filename + 1 );
+                if (NULL == ret) {
+                    return NULL;
+                }
 #ifdef HAVE_STRNCPY_S
                 strncpy_s( ret, (p - filename + 1), filename, p - filename );
 #else

orte/mca/iof/base/iof_base_frame.c

@@ -12,6 +12,8 @@
  * Copyright (c) 2013      Los Alamos National Security, LLC.  All rights reserved.
  * Copyright (c) 2013      Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2015      Intel, Inc. All rights reserved.
+ * Copyright (c) 2015      Research Organization for Information Science
+ *                         and Technology (RIST). All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -234,14 +236,19 @@ static int orte_iof_base_open(mca_base_open_flag_t flags)
          */
         char *path;
         path = opal_dirname(orte_output_filename);
+        if (NULL == path) {
+            return ORTE_ERR_OUT_OF_RESOURCE;
+        }
         if (0 != strcmp(path, orte_output_filename)) {
             /* there is a path in this name - ensure that the directory
              * exists, and create it if not
              */
             if (ORTE_SUCCESS != (rc = opal_os_dirpath_create(path, S_IRWXU))) {
+                free(path);
                 return rc;
             }
         }
+        free(path);
     }
 
     /* daemons do not need to do this as they do not write out stdout/err */