Only declare a variable if it will be used.

Spotted by: cppcheck

diff --git a/src/lib/comp/zstd/zstd.c b/src/lib/comp/zstd/zstd.c
index 628edc75b83df41ceb4868068829b5202ff6d678..921426fcfc489a61806e279590e8cbfa31c2a412 100644 (file)
--- a/src/lib/comp/zstd/zstd.c
+++ b/src/lib/comp/zstd/zstd.c
@@ -37,7 +37,9 @@ static bool init(zckCtx *zck, zckComp *comp) {
     VALIDATE_BOOL(zck);
     ALLOCD_BOOL(zck, comp);
 
+#ifndef OLD_ZSTD
     size_t retval = 0;
+#endif
 
     comp->cctx = ZSTD_createCCtx();
 #ifndef OLD_ZSTD