lib/errors: return the internal error only if its not nil on Unwrap

If the internal error is nil, the Unwrap method will return the instance
of e itself.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/errors/errors.go b/lib/errors/errors.go
index 35b74d1c..13e3b995 100644
--- a/lib/errors/errors.go
+++ b/lib/errors/errors.go
@@ -58,8 +58,12 @@ func (e *E) Error() string {
 }
 
 //
-// Unwrap return the internal error.
+// Unwrap return the internal error only if its not nil; otherwise it will
+// return the e itself.
 //
 func (e *E) Unwrap() error {
-	return e.err
+	if e.err != nil {
+		return e.err
+	}
+	return e
 }