thodg/libgit2

diff --git a/src/stream.h b/src/stream.h
index 43fcc30..4692c71 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -62,6 +62,9 @@ GIT_INLINE(int) git_stream_close(git_stream *st)
 
 GIT_INLINE(void) git_stream_free(git_stream *st)
 {
+	if (!st)
+		return;
+
 	st->free(st);
 }