servo: Merge #5576 - net/storage_task.rs: Fix remove_item (from jagta…

…lon:jag/slashdot-storage); r=jdm

Use `and_then` and remove `unwrap` instead of using a `map` as described in servo/servo#5548 (comment).

Fixes #5548

Source-Repo: https://github.com/servo/servo
Source-Revision: 9754c4c255988475d12a9c64a335d9bc8828076b

UltraBlame original commit: acb172dc8353e4e88c8ae12ac3ff3c2703154275

servo/components/net/storage_task.rs

@@ -965,7 +965,7 @@ get_mut
 origin
 )
 .
-map
+and_then
 (
 |
 entry
@@ -980,10 +980,6 @@ name
 )
 }
 )
-.
-unwrap
-(
-)
 ;
 sender
 .

servo/tests/content/test_storage.html

@@ -0,0 +1,76 @@
+<
+html
+>
+<
+head
+>
+<
+title
+>
+<
+/
+title
+>
+<
+script
+src
+=
+"
+harness
+.
+js
+"
+>
+<
+/
+script
+>
+<
+/
+head
+>
+<
+body
+>
+<
+script
+>
+/
+/
+Delete
+keys
+that
+don
+'
+t
+exist
+in
+either
+localStorage
+/
+/
+or
+sessionStorage
+.
+delete
+localStorage
+.
+a
+;
+delete
+sessionStorage
+.
+a
+;
+<
+/
+script
+>
+<
+/
+body
+>
+<
+/
+html
+>