The branch stable/13 has been updated by kib:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=ec235e162af984c3b8893d8381868506360b27c9

commit ec235e162af984c3b8893d8381868506360b27c9
Author:     Konstantin Belousov <[email protected]>
AuthorDate: 2021-10-21 17:40:24 +0000
Commit:     Konstantin Belousov <[email protected]>
CommitDate: 2021-10-27 00:24:40 +0000

    subr_firmware.c::unloadentry(): remove write-only variable
    
    (cherry picked from commit 6776747a0e0b1c0e3fb916685ac2180ca4ce2f3d)
---
 sys/kern/subr_firmware.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/kern/subr_firmware.c b/sys/kern/subr_firmware.c
index 0465f2a88483..aafb2a2ba265 100644
--- a/sys/kern/subr_firmware.c
+++ b/sys/kern/subr_firmware.c
@@ -412,7 +412,6 @@ static void
 unloadentry(void *unused1, int unused2)
 {
        struct priv_fw *fp;
-       int err;
 
        mtx_lock(&firmware_mtx);
 restart:
@@ -434,7 +433,7 @@ restart:
                 * on unload to actually free the entry.
                 */
                mtx_unlock(&firmware_mtx);
-               err = linker_release_module(NULL, NULL, fp->file);
+               (void)linker_release_module(NULL, NULL, fp->file);
                mtx_lock(&firmware_mtx);
 
                /*

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