Merge pull request #4649 from orestisfl/fix-errno

Fix compilation error on debian

libi3/create_socket.c

@@ -10,6 +10,7 @@
 #include <unistd.h>
 #include <libgen.h>
 #include <err.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>