systat: return for non-void function

[Florian Obser]

pointed out by clang

OK?

diff --git pool.c pool.c
index b6691ae0da6..3b289446522 100644
--- pool.c
+++ pool.c
@@ -496,6 +496,7 @@ unalloc:
                pc = &pool_caches[--i];
                free(pc->cache_cpus);
        }
+       return (-1);
 }
 
 void


-- 
I'm not entirely sure you are real.