Add missing AC_MSG_RESULT

Output the result of the "iops->mkdir() returns struct dentry*"
check to cleanup the configure output.

Reviewed-by: Alexander Motin <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #17641

Author: behlendorf

config/kernel-mkdir.m4

@@ -84,6 +84,8 @@ AC_DEFUN([ZFS_AC_KERNEL_MKDIR], [
 		AC_DEFINE(HAVE_IOPS_MKDIR_DENTRY, 1,
 		    [iops->mkdir() returns struct dentry*])
 	],[
+		AC_MSG_RESULT(no)
+
 		dnl #
 		dnl # 6.3 API change
 		dnl # mkdir() takes struct mnt_idmap * as the first arg