File include-fixes.patch of Package lxcfs

Index: lxcfs-4.0.12/src/utils.h
===================================================================
--- lxcfs-4.0.12.orig/src/utils.h
+++ lxcfs-4.0.12/src/utils.h
@@ -46,6 +46,8 @@ static inline int pidfd_open(pid_t pid,
 {
 	return syscall(__NR_pidfd_open, pid, flags);
 }
+#else
+#include <sys/pidfd.h>
 #endif
 
 #if !HAVE_PIDFD_SEND_SIGNAL