Fix a memory leak in Index.EntryByPath()
Fix a memory leak in Index.EntryByPath()

pks-t/git2go,libgit2/git2go,ezwiebel/git2go,pks-t/git2go,clns/git2go,clns/git2go,libgit2/git2go,ezwiebel/git2go,ezwiebel/git2go,clns/git2go,libgit2/git2go