Include "commit.h" in "rebase.h" for git_commit_signing_cb
diff --git a/include/git2/rebase.h b/include/git2/rebase.h
index a13873c..394117c 100644
--- a/include/git2/rebase.h
+++ b/include/git2/rebase.h
@@ -13,6 +13,7 @@
#include "annotated_commit.h"
#include "merge.h"
#include "checkout.h"
+#include "commit.h"
/**
* @file git2/rebase.h