Merge pull request libgit2#4635 from tiennou/fix/leaks-v0.27.1

Leak fixes for v0.27.1

Author: pks-t

src/remote.c

@@ -237,7 +237,7 @@ static int create_internal(git_remote **out, git_repository *repo, const char *n
 			goto on_error;
 
 		/* only write for non-anonymous remotes */
-		if (name && (error = write_add_refspec(repo, name, fetch, true)) < 0)
+		if (repo && name && (error = write_add_refspec(repo, name, fetch, true)) < 0)
 			goto on_error;
 
 		if (repo && (error = lookup_remote_prune_config(remote, config_ro, name)) < 0)

src/transports/local.c

@@ -512,8 +512,10 @@ static int foreach_reference_cb(git_reference *reference, void *payload)
 	git_revwalk *walk = (git_revwalk *)payload;
 	int error;
 
-	if (git_reference_type(reference) != GIT_REF_OID)
+	if (git_reference_type(reference) != GIT_REF_OID) {
+		git_reference_free(reference);
 		return 0;
+	}
 
 	error = git_revwalk_hide(walk, git_reference_target(reference));
 	/* The reference is in the local repository, so the target may not

src/worktree.c

@@ -131,7 +131,7 @@ static int open_worktree_dir(git_worktree **out, const char *parent, const char
 		goto out;
 	}
 
-	if ((wt = git__calloc(1, sizeof(struct git_repository))) == NULL) {
+	if ((wt = git__calloc(1, sizeof(*wt))) == NULL) {
 		error = -1;
 		goto out;
 	}