Fixed error when including git2/include/sys/stream.h
diff --git a/include/git2/sys/stream.h b/include/git2/sys/stream.h
index c249055..c22179f 100644
--- a/include/git2/sys/stream.h
+++ b/include/git2/sys/stream.h
@@ -37,4 +37,6 @@ typedef struct git_stream {
void (*free)(struct git_stream *);
} git_stream;
+GIT_END_DECL
+
#endif