Remove literals overread in ZSTD_storeSeq() for ~neutral perf

lib/common/zstd_internal.h

@@ -214,7 +214,7 @@ typedef enum {
  *           The src buffer must be before the dst buffer.
  */
 MEM_STATIC FORCE_INLINE_ATTR DONT_VECTORIZE
-void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e ovtype)
+void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e const ovtype)
 {
     ptrdiff_t diff = (BYTE*)dst - (const BYTE*)src;
     const BYTE* ip = (const BYTE*)src;