From 043e607765028937fc16c1b4ec5132878c858bdd Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Sat, 28 Nov 2015 16:19:37 +0100
Subject: [PATCH] Implement StorageBackendError::cause()

---
 src/module/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/module/mod.rs b/src/module/mod.rs
index d1e06716..1319b90e 100644
--- a/src/module/mod.rs
+++ b/src/module/mod.rs
@@ -34,7 +34,7 @@ impl Error for ModuleError {
     }
 
     fn cause(&self) -> Option<&Error> {
-        unimplemented!()
+        self.caused_by.as_ref().map(|e| &**e)
     }
 
 }