configure: fix verrc check

diff --git a/configure b/configure
index 0dfc64940b4dd598312e88e0acbd841b5aaf653e..82b9331eba8ab60f2f0171fe6b25b252f3937600 100755 (executable)
--- a/configure
+++ b/configure
@@ -298,9 +298,10 @@ check_func "errc" "$src" || {
 # Check for verrc().
 #
 src='
+#include <stddef.h>
 #include <err.h>
 int main(void) {
-       verrc(0, 0, "");
+       verrc(0, 0, "x", NULL);
        return 0;
 }'
 check_func "verrc" "$src" || {