LU-16785 build: Cleanup test for IS_ENCRYPTED macro

Suppress warning when -Wunused-value is enabled.

Test-Parameters: trivial
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: Iec387286fd8499bb13f43c89e671d7d7aa0de9e1
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50818
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 8603884..358f102 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -2510,7 +2510,7 @@ LB_CHECK_COMPILE([if IS_ENCRYPTED is defined],
 is_encrypted, [
        #include <linux/fs.h>
 ],[
-       IS_ENCRYPTED((struct inode *)0);
+       (void)IS_ENCRYPTED((struct inode *)1);
 ],[
        has_is_encrypted="yes"
 ])