Some more minor updates to better use some gcc attributes.
 -Erik
diff --git a/tail.c b/tail.c
index 5e05fe8..315eee1 100644
--- a/tail.c
+++ b/tail.c
@@ -445,6 +445,8 @@
 
 
 static void detailed_error(int i, int errnum, char *fmt, ...)
+			  __attribute__ ((format (printf, 3, 4)));
+static void detailed_error(int i, int errnum, char *fmt, ...)
 {
 	va_list arguments;