Fixed macos failing tests:

Pinned macos xrootd to last working version
Added an error check in LocalCache.Stat()

github_scripts/osx_install.sh

@@ -43,8 +43,9 @@ popd
 
 # Build XRootD from source
 # Add patches to xrootd source code if needed
-git clone --depth=1 https://github.com/xrootd/xrootd.git
+git clone --depth=10 https://github.com/xrootd/xrootd.git
 pushd xrootd
+git checkout d74b2af36d04c398a91235bd2de32ee1283e92fe
 patch -p1 < $scriptdir/pelican_protocol.patch
 mkdir xrootd_build
 cd xrootd_build

local_cache/local_cache.go

@@ -718,6 +718,9 @@ func (lc *LocalCache) Stat(path, token string) (uint64, error) {
 	dUrl.Path = path
 	dUrl.Scheme = "pelican"
 	statInfo, err := client.DoStat(context.Background(), dUrl.String(), client.WithToken(token))
+	if err != nil {
+		return 0, err
+	}
 	return uint64(statInfo.Size), err
 }