mpool/hugepage mntent intro fallout

On Cray, PR #1846 introduced a double free
situation which led to all kinds of random memory
corruption problems.

This commit fixes this problem.

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

opal/mca/mpool/hugepage/mpool_hugepage_component.c

@@ -230,7 +230,6 @@ static void mca_mpool_hugepage_find_hugepages (void) {
 
         do {
             if (0 == strncmp (tok, "pagesize", 8)) {
-                free(opts);
                 break;
             }
             tok = strtok_r (NULL, ",", &ctx);