Replace all std.ArrayList with std.ArrayListUnmanaged

Very minor, but the more we can do upfront to align the code for Zig 0.15, the
better.

Author: karlseguin

src/browser/css/libdom_test.zig

@@ -20,26 +20,31 @@ const std = @import("std");
 const css = @import("css.zig");
 const Node = @import("libdom.zig").Node;
 const parser = @import("../netsurf.zig");
+const Allocator = std.mem.Allocator;
 
 const Matcher = struct {
-    const Nodes = std.ArrayList(Node);
+    const Nodes = std.ArrayListUnmanaged(Node);
 
     nodes: Nodes,
+    allocator: Allocator,
 
-    fn init(alloc: std.mem.Allocator) Matcher {
-        return .{ .nodes = Nodes.init(alloc) };
+    fn init(allocator: Allocator) Matcher {
+        return .{
+            .nodes = .empty,
+            .allocator = allocator,
+        };
     }
 
     fn deinit(m: *Matcher) void {
-        m.nodes.deinit();
+        m.nodes.deinit(m.allocator);
     }
 
     fn reset(m: *Matcher) void {
         m.nodes.clearRetainingCapacity();
     }
 
     pub fn match(m: *Matcher, n: Node) !void {
-        try m.nodes.append(n);
+        try m.nodes.append(m.allocator, n);
     }
 };
 

src/browser/css/match_test.zig

@@ -84,24 +84,28 @@ pub const Node = struct {
 };
 
 const Matcher = struct {
-    const Nodes = std.ArrayList(*const Node);
+    const Nodes = std.ArrayListUnmanaged(*const Node);
 
     nodes: Nodes,
+    allocator: Allocator,
 
-    fn init(alloc: std.mem.Allocator) Matcher {
-        return .{ .nodes = Nodes.init(alloc) };
+    fn init(allocator: Allocator) Matcher {
+        return .{
+            .nodes = .empty,
+            .allocator = allocator,
+        };
     }
 
     fn deinit(m: *Matcher) void {
-        m.nodes.deinit();
+        m.nodes.deinit(self.allocator);
     }
 
     fn reset(m: *Matcher) void {
         m.nodes.clearRetainingCapacity();
     }
 
     pub fn match(m: *Matcher, n: *const Node) !void {
-        try m.nodes.append(n);
+        try m.nodes.append(self.allocator, n);
     }
 };