macloader: include errno.h

Fix build

Change-Id: Ib60f66ddc2065bc92cd32e507ae9f3a5023f54c2
diff --git a/macloader/macloader.c b/macloader/macloader.c
index a71afb0..e700063 100644
--- a/macloader/macloader.c
+++ b/macloader/macloader.c
@@ -27,6 +27,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <pwd.h>
+#include <errno.h>
 
 #include <cutils/log.h>