From 211fb00574d41bb262d7a6bc6accc5ab149545c9 Mon Sep 17 00:00:00 2001
From: krk <keremkat@gmail.com>
Date: Tue, 9 Apr 2019 21:02:03 +0200
Subject: [PATCH] Replace panic with warn in DocumentLoader.finish_load.

Fix panic on broken script URL with an onerror handler that rewrites the
document.
---
 components/script/document_loader.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/components/script/document_loader.rs b/components/script/document_loader.rs
index dac891053d71..d924d6bc574d 100644
--- a/components/script/document_loader.rs
+++ b/components/script/document_loader.rs
@@ -167,8 +167,12 @@ impl DocumentLoader {
             .blocking_loads
             .iter()
             .position(|unfinished| *unfinished == *load);
-        self.blocking_loads
-            .remove(idx.unwrap_or_else(|| panic!("unknown completed load {:?}", load)));
+        match idx {
+            Some(i) => {
+                self.blocking_loads.remove(i);
+            },
+            None => warn!("unknown completed load {:?}", load),
+        }
     }
 
     pub fn is_blocked(&self) -> bool {