Correct includes

src/tar.c

@@ -1,6 +1,6 @@
 #include "tar.h"
 #include "minitar.h"
-#include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 
 // all of these are defined in util.c

src/util.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 
 #ifndef __TINYC__
 #include <stdnoreturn.h>