Merge branch 'en/diffcore-delta-final-line-fix'

Rename detection logic ignored the final line of a file if it is an
incomplete line.

* en/diffcore-delta-final-line-fix:
  diffcore-delta: avoid ignoring final 'line' of file

diffcore-delta.c

@@ -158,6 +158,10 @@ static struct spanhash_top *hash_chars(struct repository *r,
 		n = 0;
 		accum1 = accum2 = 0;
 	}
+	if (n > 0) {
+		hashval = (accum1 + accum2 * 0x61) % HASHBASE;
+		hash = add_spanhash(hash, hashval, n);
+	}
 	QSORT(hash->data, (size_t)1ul << hash->alloc_log2, spanhash_cmp);
 	return hash;
 }