BUILD: don't use type "uint" which is not portable

Dmitry Sivachenko reported that "uint" doesn't build on FreeBSD 10.
On Linux it's defined in sys/types.h and indicated as "old". Just
get rid of the very few occurrences.
diff --git a/contrib/halog/halog.c b/contrib/halog/halog.c
index c686de1..fc927bd 100644
--- a/contrib/halog/halog.c
+++ b/contrib/halog/halog.c
@@ -694,7 +694,7 @@
 	struct eb32_node *n;
 	struct url_stat *ustat = NULL;
 	int val, test;
-	uint uval;
+	unsigned int uval;
 	int filter_acc_delay = 0, filter_acc_count = 0;
 	int filter_time_resp = 0;
 	int filt_http_status_low = 0, filt_http_status_high = 0;