Workaround for _PATH_UTMP and _PATH_WTMP defines on musl libc

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/utmp-api.c

@@ -25,16 +25,12 @@
 
 #include <paths.h>
 #include <time.h>
-#include <utmp.h>
 #include <arpa/inet.h>
 #include <sys/utsname.h>
 #include <lite/lite.h>
 
 #include "helpers.h"
-
-#ifndef _PATH_BTMP
-#define _PATH_BTMP "/var/log/btmp"
-#endif
+#include "utmp-api.h"
 
 #define MAX_NO 5
 #define MAX_SZ 100 * 1024