blame.c: rename "repo" argument to "r"

The current naming convention for 'struct repository *' is 'r' for
temporary variables or arguments. I did not notice this. Since we're
updating blame.c again in the next patch, let's fix this.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

blame.c

@@ -90,7 +90,7 @@ static struct blame_origin *get_origin(struct commit *commit, const char *path)
 
 
 
-static void verify_working_tree_path(struct repository *repo,
+static void verify_working_tree_path(struct repository *r,
 				     struct commit *work_tree, const char *path)
 {
 	struct commit_list *parents;
@@ -102,15 +102,15 @@ static void verify_working_tree_path(struct repository *repo,
 		unsigned mode;
 
 		if (!get_tree_entry(commit_oid, path, &blob_oid, &mode) &&
-		    oid_object_info(repo, &blob_oid, NULL) == OBJ_BLOB)
+		    oid_object_info(r, &blob_oid, NULL) == OBJ_BLOB)
 			return;
 	}
 
-	pos = index_name_pos(repo->index, path, strlen(path));
+	pos = index_name_pos(r->index, path, strlen(path));
 	if (pos >= 0)
 		; /* path is in the index */
-	else if (-1 - pos < repo->index->cache_nr &&
+	else if (-1 - pos < r->index->cache_nr &&
-		 !strcmp(repo->index->cache[-1 - pos]->name, path))
+		 !strcmp(r->index->cache[-1 - pos]->name, path))
 		; /* path is in the index, unmerged */
 	else
 		die("no such path '%s' in HEAD", path);
@@ -166,7 +166,7 @@ static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb)
  * Prepare a dummy commit that represents the work tree (or staged) item.
  * Note that annotating work tree item never works in the reverse.
  */
-static struct commit *fake_working_tree_commit(struct repository *repo,
+static struct commit *fake_working_tree_commit(struct repository *r,
 					       struct diff_options *opt,
 					       const char *path,
 					       const char *contents_from)
@@ -183,7 +183,7 @@ static struct commit *fake_working_tree_commit(struct repository *repo,
 	unsigned mode;
 	struct strbuf msg = STRBUF_INIT;
 
-	read_index(repo->index);
+	read_index(r->index);
 	time(&now);
 	commit = alloc_commit_node(the_repository);
 	commit->object.parsed = 1;
@@ -195,7 +195,7 @@ static struct commit *fake_working_tree_commit(struct repository *repo,
 
 	parent_tail = append_parent(parent_tail, &head_oid);
 	append_merge_parents(parent_tail);
-	verify_working_tree_path(repo, commit, path);
+	verify_working_tree_path(r, commit, path);
 
 	origin = make_origin(commit, path);
 
@@ -253,7 +253,7 @@ static struct commit *fake_working_tree_commit(struct repository *repo,
 		if (strbuf_read(&buf, 0, 0) < 0)
 			die_errno("failed to read from stdin");
 	}
-	convert_to_git(repo->index, path, buf.buf, buf.len, &buf, 0);
+	convert_to_git(r->index, path, buf.buf, buf.len, &buf, 0);
 	origin->file.ptr = buf.buf;
 	origin->file.size = buf.len;
 	pretend_object_file(buf.buf, buf.len, OBJ_BLOB, &origin->blob_oid);
@@ -264,28 +264,28 @@ static struct commit *fake_working_tree_commit(struct repository *repo,
 	 * bits; we are not going to write this index out -- we just
 	 * want to run "diff-index --cached".
 	 */
-	discard_index(repo->index);
+	discard_index(r->index);
-	read_index(repo->index);
+	read_index(r->index);
 
 	len = strlen(path);
 	if (!mode) {
-		int pos = index_name_pos(repo->index, path, len);
+		int pos = index_name_pos(r->index, path, len);
 		if (0 <= pos)
-			mode = repo->index->cache[pos]->ce_mode;
+			mode = r->index->cache[pos]->ce_mode;
 		else
 			/* Let's not bother reading from HEAD tree */
 			mode = S_IFREG | 0644;
 	}
-	ce = make_empty_cache_entry(repo->index, len);
+	ce = make_empty_cache_entry(r->index, len);
 	oidcpy(&ce->oid, &origin->blob_oid);
 	memcpy(ce->name, path, len);
 	ce->ce_flags = create_ce_flags(0);
 	ce->ce_namelen = len;
 	ce->ce_mode = create_ce_mode(mode);
-	add_index_entry(repo->index, ce,
+	add_index_entry(r->index, ce,
 			ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE);
 
-	cache_tree_invalidate_path(repo->index, path);
+	cache_tree_invalidate_path(r->index, path);
 
 	return commit;
 }
@@ -520,14 +520,14 @@ static void queue_blames(struct blame_scoreboard *sb, struct blame_origin *porig
  *
  * This also fills origin->mode for corresponding tree path.
  */
-static int fill_blob_sha1_and_mode(struct repository *repo,
+static int fill_blob_sha1_and_mode(struct repository *r,
 				   struct blame_origin *origin)
 {
 	if (!is_null_oid(&origin->blob_oid))
 		return 0;
 	if (get_tree_entry(&origin->commit->object.oid, origin->path, &origin->blob_oid, &origin->mode))
 		goto error_out;
-	if (oid_object_info(repo, &origin->blob_oid, NULL) != OBJ_BLOB)
+	if (oid_object_info(r, &origin->blob_oid, NULL) != OBJ_BLOB)
 		goto error_out;
 	return 0;
  error_out: