better error message

diff --git a/lib/Eval/Closure.pm b/lib/Eval/Closure.pm
index 0037337..f0457fd 100644 (file)
--- a/lib/Eval/Closure.pm
+++ b/lib/Eval/Closure.pm
@@ -62,8 +62,9 @@ sub _clean_eval_closure {
     my $e = $@;
 
     if (!ref($code) || ref($code) ne 'CODE') {
+        $e = "The 'source' parameter must return a subroutine reference, "
+           . "not $code";
         undef $code;
-        $e = "The 'source' parameter must return a subroutine reference";
     }
 
     return ($code, $e);