oshmem/proc: Sanity check for oshmem_proc_t size

Signed-off-by: Igor Ivanov <Igor.Ivanov@itseez.com>

oshmem/proc/proc.c

@@ -40,6 +40,8 @@ int oshmem_proc_init(void)
 {
     OBJ_CONSTRUCT(&oshmem_proc_lock, opal_mutex_t);
 
+    assert(sizeof(ompi_proc_t) >= sizeof(oshmem_proc_t));
+
     return OSHMEM_SUCCESS;
 }