Add braces per Jeff's comment in #9084

Signed-off-by: Rainer Keller <rainer.keller@hs-esslingen.de>

Author: hpcraink

ompi/mca/common/ompio/common_ompio_file_open.c

@@ -236,8 +236,9 @@ int mca_common_ompio_file_close (ompio_file_t *ompio_fh)
     char name[256];
 
     /* Call coll_barrier only if collectives are set (same reasoning as below for f_fs) */
-    if (NULL == ompio_fh->f_comm || NULL == ompio_fh->f_comm->c_coll)
+    if (NULL == ompio_fh->f_comm || NULL == ompio_fh->f_comm->c_coll) {
         return OMPI_SUCCESS;
+    }
 
     ret = ompio_fh->f_comm->c_coll->coll_barrier ( ompio_fh->f_comm, ompio_fh->f_comm->c_coll->coll_barrier_module);
     if ( OMPI_SUCCESS != ret ) {