mpool/hugepage: plug a memory leak

Refs. open-mpi/ompi#6242

Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>

opal/mca/mpool/hugepage/mpool_hugepage_component.c

@@ -15,8 +15,8 @@
  * Copyright (c) 2012-2016 Los Alamos National Security, LLC. All rights
  *                         reserved.
  * Copyright (c) 2016      Intel, Inc. All rights reserved.
- * Copyright (c) 2016      Research Organization for Information Science
- *                         and Technology (RIST). All rights reserved.
+ * Copyright (c) 2016-2019 Research Organization for Information Science
+ *                         and Technology (RIST).  All rights reserved.
  *
  * $COPYRIGHT$
  *
@@ -274,6 +274,7 @@ static void mca_mpool_hugepage_find_hugepages (void) {
             opal_output_verbose (MCA_BASE_VERBOSE_INFO, opal_mpool_base_framework.framework_output,
                                  "found huge page with size = %lu, path = %s, mmap flags = 0x%x, with invalid " 
                                  "permissions, skipping", hp->page_size, hp->path, hp->mmap_flags);
+            OBJ_RELEASE(hp);
         }        
     }