util.h: slightly improve portability

Tested with the scc compiler which is a pure c99 compiler.

sys/types.h is not needed here anymore (it was used for ssize_t).

Side-note: scc can now compile the sfeed parser program!
It requires these changes at the time of writing: Add a strcasecmp and
strncasecmp function and use getchar instead of getchar_unlocked.

1 files changed, 1 insertions, 2 deletions

diff --git a/util.h b/util.h
index 8053750..7923cdc 100644
--- a/util.h
+++ b/util.h
@@ -1,6 +1,5 @@
-#include <sys/types.h>
-
 #include <stdio.h>
+#include <time.h>
 
 #ifdef __OpenBSD__
 #include <unistd.h>