POSIX nan: declaring s always potentially unused.

diff --git a/ext/POSIX/POSIX.xs b/ext/POSIX/POSIX.xs
index 4ee0ec2..81dc18b 100644 (file)
--- a/ext/POSIX/POSIX.xs
+++ b/ext/POSIX/POSIX.xs
@@ -2631,10 +2631,10 @@ NV
 nan(s = 0)
        char*   s;
     CODE:
+       PERL_UNUSED_VAR(s);
 #ifdef c99_nan
        RETVAL = c99_nan(s ? s : "");
 #elif defined(NV_NAN)
-       PERL_UNUSED_VAR(s);
        /* XXX if s != NULL, warn about unused argument,
          * or implement the nan payload setting. */
        RETVAL = NV_NAN;