[PATCH 1/3] lib: zstd: Fix unused variable warning

[Nick Terrell <nickrterrell@xxxxxxxxx>]

From: Nick Terrell <terrelln@xxxxxx>

Backport the fix from upstream PR #2838 [0]. Found by the Kernel test
robot in [1].

[0] https://github.com/facebook/zstd/pull/2838
[1] https://lore.kernel.org/linux-mm/202111120312.833wII4i-lkp@xxxxxxxxx/T/

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Nick Terrell <terrelln@xxxxxx>
---
 lib/zstd/compress/zstd_compress_superblock.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/zstd/compress/zstd_compress_superblock.c b/lib/zstd/compress/zstd_compress_superblock.c
index ee03e0aedb03..a6a8e9a2aa0e 100644
--- a/lib/zstd/compress/zstd_compress_superblock.c
+++ b/lib/zstd/compress/zstd_compress_superblock.c
@@ -411,6 +411,7 @@ static size_t ZSTD_seqDecompressedSize(seqStore_t const* seqStore, const seqDef*
     const seqDef* sp = sstart;
     size_t matchLengthSum = 0;
     size_t litLengthSum = 0;
+    (void)litLengthSum;
     while (send-sp > 0) {
         ZSTD_sequenceLength const seqLen = ZSTD_getSequenceLength(seqStore, sp);
         litLengthSum += seqLen.litLength;
-- 
2.33.1