lustre_file_open: Fix memory leak

Signed-off-by: Bert Wesarg <bert.wesarg@tu-dresden.de>

Author: bertwesarg

ompi/mca/fs/lustre/fs_lustre_file_open.c

@@ -134,19 +134,21 @@ mca_fs_lustre_file_open (struct ompi_communicator_t *comm,
     }
 
     lump = alloc_lum();
-    if (NULL == lump ){
+    if (NULL == lump) {
         fprintf(stderr,"Cannot allocate memory for extracting stripe size\n");
         return OMPI_ERROR;
     }
     rc = llapi_file_get_stripe(filename, lump);
     if (rc != 0) {
         opal_output(1, "get_stripe failed: %d (%s)\n", errno, strerror(errno));
+        free(lump);
         return OMPI_ERROR;
     }
     fh->f_stripe_size   = lump->lmm_stripe_size;
     fh->f_stripe_count  = lump->lmm_stripe_count;
     fh->f_fs_block_size = lump->lmm_stripe_size;
     fh->f_flags |= OMPIO_LOCK_NEVER;
-    
+    free(lump);
+
     return OMPI_SUCCESS;
 }