utf8proc_unicode_version is too new.

proc.c

@@ -190,14 +190,14 @@ proc_start(const char *name)
 	log_debug("on %s %s %s", u.sysname, u.release, u.version);
 	log_debug("using libevent %s (%s)"
 #ifdef HAVE_UTF8PROC
-	    "; utf8proc %s (Unicode %s)"
+	    "; utf8proc %s"
 #endif
 #ifdef NCURSES_VERSION
 	    "; ncurses " NCURSES_VERSION
 #endif
 	    , event_get_version(), event_get_method()
 #ifdef HAVE_UTF8PROC
-	    , utf8proc_version (), utf8proc_unicode_version ()
+	    , utf8proc_version ()
 #endif
 	);