Explictily include <time.h> to avoid build err

while disable ssl, we will got a undefine time_t err

see https://bugs.gentoo.org/show_bug.cgi?id=601498

Signed-off-by: Yixun Lan <dlan@gentoo.org>

html.h

@@ -8,6 +8,8 @@
 #include <openssl/ssl.h>
 #endif				/* USE_SSL */
 
+#include <time.h>
+
 #define StrUFgets(f) StrISgets((f)->stream)
 #define StrmyUFgets(f) StrmyISgets((f)->stream)
 #define UFgetc(f) ISgetc((f)->stream)