thodg/libgit2

diff --git a/src/attr_file.c b/src/attr_file.c
index 500c99b..11d1493 100644
--- a/src/attr_file.c
+++ b/src/attr_file.c
@@ -123,7 +123,7 @@ int git_attr_file__load(
 		break;
 	}
 	case GIT_ATTR_FILE__FROM_FILE: {
-		int fd;
+		int fd = -1;
 
 		/* For open or read errors, pretend that we got ENOTFOUND. */
 		/* TODO: issue warning when warning API is available */
@@ -133,7 +133,8 @@ int git_attr_file__load(
 			(fd = git_futils_open_ro(entry->fullpath)) < 0 ||
 			(error = git_futils_readbuffer_fd(&content, fd, (size_t)st.st_size)) < 0)
 			nonexistent = true;
-		else
+
+		if (fd >= 0)
 			p_close(fd);
 
 		break;
diff --git a/src/checkout.c b/src/checkout.c
index a92ad08..fd8e2c4 100644
--- a/src/checkout.c
+++ b/src/checkout.c
@@ -1487,8 +1487,10 @@ static int blob_content_to_file(
 	if (!data->opts.disable_filters &&
 		(error = git_filter_list__load_ext(
 			&fl, data->repo, blob, hint_path,
-			GIT_FILTER_TO_WORKTREE, &filter_opts)))
+			GIT_FILTER_TO_WORKTREE, &filter_opts))) {
+		p_close(fd);
 		return error;
+	}
 
 	/* setup the writer */
 	memset(&writer, 0, sizeof(struct checkout_stream));
diff --git a/src/pack-objects.c b/src/pack-objects.c
index fd181fc..0afa28e 100644
--- a/src/pack-objects.c
+++ b/src/pack-objects.c
@@ -91,7 +91,7 @@ static unsigned name_hash(const char *name)
 static int packbuilder_config(git_packbuilder *pb)
 {
 	git_config *config;
-	int ret;
+	int ret = 0;
 	int64_t val;
 
 	if ((ret = git_repository_config_snapshot(&config, pb->repo)) < 0)
@@ -100,8 +100,10 @@ static int packbuilder_config(git_packbuilder *pb)
 #define config_get(KEY,DST,DFLT) do { \
 	ret = git_config_get_int64(&val, config, KEY); \
 	if (!ret) (DST) = val; \
-	else if (ret == GIT_ENOTFOUND) (DST) = (DFLT); \
-	else if (ret < 0) return -1; } while (0)
+	else if (ret == GIT_ENOTFOUND) { \
+	    (DST) = (DFLT); \
+	    ret = 0; \
+	} else if (ret < 0) goto out; } while (0)
 
 	config_get("pack.deltaCacheSize", pb->max_delta_cache_size,
 		   GIT_PACK_DELTA_CACHE_SIZE);
@@ -113,9 +115,10 @@ static int packbuilder_config(git_packbuilder *pb)
 
 #undef config_get
 
+out:
 	git_config_free(config);
 
-	return 0;
+	return ret;
 }
 
 int git_packbuilder_new(git_packbuilder **out, git_repository *repo)
@@ -605,6 +608,7 @@ static git_pobject **compute_write_order(git_packbuilder *pb)
 	}
 
 	if (wo_end != pb->nr_objects) {
+		git__free(wo);
 		giterr_set(GITERR_INVALID, "invalid write order");
 		return NULL;
 	}
diff --git a/src/pack.c b/src/pack.c
index f6cb3a5..081e370 100644
--- a/src/pack.c
+++ b/src/pack.c
@@ -790,7 +790,6 @@ int git_packfile_stream_open(git_packfile_stream *obj, struct git_pack_file *p, 
 	obj->zstream.next_out = Z_NULL;
 	st = inflateInit(&obj->zstream);
 	if (st != Z_OK) {
-		git__free(obj);
 		giterr_set(GITERR_ZLIB, "failed to init packfile stream");
 		return -1;
 	}