[PATCH] lib: zstd: remove unneeded variable

[baomingtong001@208suo.com]

fix the following coccicheck warning:

lib/zstd/compress/zstd_cwksp.h:220:17-27: Unneeded variable: 
"slackSpace". Return "ZSTD_CWKSP_ALIGNMENT_BYTES".

Signed-off-by: Mingtong Bao <baomingtong001@208suo.com>
---
  lib/zstd/compress/zstd_cwksp.h | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/zstd/compress/zstd_cwksp.h 
b/lib/zstd/compress/zstd_cwksp.h
index 349fc923c355..36c574cd3d6f 100644
--- a/lib/zstd/compress/zstd_cwksp.h
+++ b/lib/zstd/compress/zstd_cwksp.h
@@ -217,8 +217,7 @@ MEM_STATIC size_t 
ZSTD_cwksp_slack_space_required(void) {
       * n_1 + n_2 == 64 bytes if the cwksp is freshly allocated, due to 
tables and
       * aligneds being sized in multiples of 64 bytes.
       */
-    size_t const slackSpace = ZSTD_CWKSP_ALIGNMENT_BYTES;
-    return slackSpace;
+    return ZSTD_CWKSP_ALIGNMENT_BYTES;
  }