From 886e393511cc0a3c71e3a0605e25716fbdd5fd93 Mon Sep 17 00:00:00 2001
From: Josh Matthews <josh@joshmatthews.net>
Date: Thu, 3 Aug 2017 12:04:27 -0400
Subject: [PATCH] Preallocate escaped CSS strings.

---
 ports/geckolib/error_reporter.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ports/geckolib/error_reporter.rs b/ports/geckolib/error_reporter.rs
index f13dc340a11..6b10077aa0f 100644
--- a/ports/geckolib/error_reporter.rs
+++ b/ports/geckolib/error_reporter.rs
@@ -77,7 +77,7 @@ fn escape_css_ident(ident: &str) -> String {
         return ident.into()
     }
 
-    let mut escaped = String::new();
+    let mut escaped = String::with_capacity(ident.len());
 
     // A leading dash does not need to be escaped as long as it is not the
     // *only* character in the identifier.