Update the `H5` hasher to use the `H6`'s `FN(STORE)`.

PiperOrigin-RevId: 623885589

c/enc/hash_longest_match_inc.h

diff --git a/c/enc/hash_longest_match_inc.h b/c/enc/hash_longest_match_inc.h
index 608fa66..c25cdb0 100644
--- a/c/enc/hash_longest_match_inc.h
+++ b/c/enc/hash_longest_match_inc.h
@@ -104,11 +104,13 @@
 static BROTLI_INLINE void FN(Store)(
     HashLongestMatch* BROTLI_RESTRICT self, const uint8_t* BROTLI_RESTRICT data,
     const size_t mask, const size_t ix) {
+  uint16_t* BROTLI_RESTRICT num = self->num_;
+  uint32_t* BROTLI_RESTRICT buckets = self->buckets_;
   const uint32_t key = FN(HashBytes)(&data[ix & mask], self->hash_shift_);
-  const size_t minor_ix = self->num_[key] & self->block_mask_;
+  const size_t minor_ix = num[key] & self->block_mask_;
   const size_t offset = minor_ix + (key << self->block_bits_);
-  self->buckets_[offset] = (uint32_t)ix;
-  ++self->num_[key];
+  ++num[key];
+  buckets[offset] = (uint32_t)ix;
 }
 
 static BROTLI_INLINE void FN(StoreRange)(HashLongestMatch* BROTLI_RESTRICT self,