Update that defines a default value for the "my_universe" field.

This commit was SVN r2278.

src/util/proc_info.c

@@ -22,7 +22,7 @@ ompi_proc_info_t ompi_process_info = {
     /*  .pid =                  */   0,
     /*  .name =                 */   NULL,
     /*  .seed =                 */   false,
-    /*  .my_universe =          */   NULL,
+    /*  .my_universe =          */   "default-universe",
     /*  .tmpdir_base =          */   NULL,
     /*  .universe_session_dir = */   NULL,
     /*  .job_session_dir =      */   NULL,