From: Matt S Trout <mst@shadowcat.co.uk>
Date: Wed, 27 Feb 2019 06:23:49 +0000 (+0000)
Subject: remove a literal "" in favour of undef
X-Git-Tag: v1.90_01~393
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b18a95e4a14968fde1991ac8d849c95d95594920;p=dbsrgits%2FSQL-Abstract.git

remove a literal "" in favour of undef
---

diff --git a/lib/SQL/Abstract.pm b/lib/SQL/Abstract.pm
index cba900c..a7b0da5 100644
--- a/lib/SQL/Abstract.pm
+++ b/lib/SQL/Abstract.pm
@@ -691,7 +691,7 @@ sub _expand_expr_hashpair {
           sort keys %$v
       ] };
     }
-    return { -literal => [ '' ] } unless keys %$v;
+    return undef unless keys %$v;
     my ($vk, $vv) = %$v;
     $vk =~ s/^-//;
     $vk = lc($vk);