fix build errors

.gitignore

@@ -6,3 +6,4 @@
 CMakeSettings.json
 .vs
 .idea
+.cache

include/git2/common.h

@@ -227,7 +227,7 @@ typedef enum {
 	GIT_OPT_GET_EXTENSIONS,
 	GIT_OPT_SET_EXTENSIONS,
 	GIT_OPT_GET_OWNER_VALIDATION,
-	GIT_OPT_SET_OWNER_VALIDATION
+	GIT_OPT_SET_OWNER_VALIDATION,
 	GIT_OPT_ENABLE_SHALLOW
 } git_libgit2_opt_t;
 

src/libgit2/repository.c

@@ -736,13 +736,13 @@ static int load_grafts(git_repository *repo)
 	int error;
 
 	if ((error = git_repository_item_path(&path, repo, GIT_REPOSITORY_ITEM_INFO)) < 0 ||
-	    (error = git_buf_joinpath(&path, path.ptr, "grafts")) < 0 ||
+	    (error = git_str_joinpath(&path, path.ptr, "grafts")) < 0 ||
 	    (error = git_grafts_from_file(&repo->grafts, path.ptr)) < 0)
 		goto error;
 
-	git_buf_clear(&path);
+	git_str_clear(&path);
 
-	if ((error = git_buf_joinpath(&path, repo->gitdir, "shallow")) < 0 ||
+	if ((error = git_str_joinpath(&path, repo->gitdir, "shallow")) < 0 ||
 	    (error = git_grafts_from_file(&repo->shallow_grafts, path.ptr)) < 0)
 		goto error;