Fix seccomp crash with setgid(9999)

--- a/src/portab/portab.h
+++ b/src/portab/portab.h
@@ -128,7 +128,7 @@ typedef unsigned char bool;
 # define HOST_VENDOR "unknown"
 #endif
 
-#ifdef __HAIKU__
+#if defined(__HAIKU__) || defined(__ANDROID__)
 # define SINGLE_USER_OS
 #endif
 
