From bdbe8fde42373987c9845200e4ac9801f039e28e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Fri, 6 Nov 2020 02:37:44 +0000
Subject: [PATCH] style: Shrink custom property maps before making them
 immutable.

Differential Revision: https://phabricator.services.mozilla.com/D96132
---
 components/style/custom_properties.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/components/style/custom_properties.rs b/components/style/custom_properties.rs
index 4943fd1a74a..4a0bf5bed7a 100644
--- a/components/style/custom_properties.rs
+++ b/components/style/custom_properties.rs
@@ -662,6 +662,7 @@ impl<'a> CustomPropertiesBuilder<'a> {
             let inherited = self.inherited.as_ref().map(|m| &***m);
             substitute_all(&mut map, inherited, self.device);
         }
+        map.shrink_to_fit();
         Some(Arc::new(map))
     }
 }