Alpine linux libc.musl build error fix

Prevent build error on Alpine Linux host:
libfakeroot.c error: conflicting types for 'id_t'
Error relocating openwrt/staging_dir/host/lib/libfakeroot.so: SEND_GET_XATTR: symbol not found

--- a/libfakeroot.c
+++ b/libfakeroot.c
@@ -86,12 +86,14 @@
 #define SEND_STAT64(a,b,c) send_stat64(a,b,c)
 #define SEND_GET_STAT(a,b) send_get_stat(a,b)
 #define SEND_GET_STAT64(a,b) send_get_stat64(a,b)
+#define SEND_GET_XATTR(a,b,c) send_get_xattr(a,b,c)
 #define SEND_GET_XATTR64(a,b,c) send_get_xattr64(a,b,c)
 #else
 #define SEND_STAT(a,b,c) send_stat(a,b)
 #define SEND_STAT64(a,b,c) send_stat64(a,b)
 #define SEND_GET_STAT(a,b) send_get_stat(a)
 #define SEND_GET_STAT64(a,b) send_get_stat64(a)
+#define SEND_GET_XATTR(a,b,c) send_get_xattr(a,b)
 #define SEND_GET_XATTR64(a,b,c) send_get_xattr64(a,b)
 #endif