servo: Merge #7429 - Fixed serialize_list to no longer append an addi…

…tional space at the e… (from GyrosOfWar:serialize_list_space_fix); r=jdm

…nd of the string.

Fixes #7404

Source-Repo: https://github.com/servo/servo
Source-Revision: e1ede2074d2ceb74c0d9f38b23697f17dc3a8fc9

UltraBlame original commit: 75b95728f586e13d18d00e4dd5840e8f9263112d

servo/components/script/dom/cssstyledeclaration.rs

@@ -202,6 +202,15 @@ cell
 :
 Ref
 ;
+use
+std
+:
+:
+slice
+:
+:
+SliceConcatExt
+;
 #
 [
 dom_struct
@@ -337,38 +346,42 @@ PropertyDeclaration
 >
 DOMString
 {
+let
+strings
+:
+Vec
+<
+_
+>
+=
 list
 .
 iter
 (
 )
 .
-fold
-(
-String
-:
-:
-new
+map
 (
-)
 |
-accum
-ref
-declaration
+d
 |
-{
-accum
-+
-&
-declaration
+d
 .
 value
 (
 )
-+
+)
+.
+collect
+(
+)
+;
+strings
+.
+join
+(
 "
 "
-}
 )
 }
 impl

servo/components/script/lib.rs

@@ -225,6 +225,14 @@ vec_push_all
 #
 !
 [
+feature
+(
+slice_concat_ext
+)
+]
+#
+!
+[
 deny
 (
 unsafe_code