avoid inline + don't initialize node

src/browser/Page.zig

@@ -1025,11 +1025,11 @@ pub fn getElementByIdFromNode(self: *Page, node: *Node, id: []const u8) ?*Elemen
     return null;
 }
 
-pub inline fn registerMutationObserver(self: *Page, observer: *MutationObserver) !void {
+pub fn registerMutationObserver(self: *Page, observer: *MutationObserver) !void {
     self._mutation_observers.append(&observer.node);
 }
 
-pub inline fn unregisterMutationObserver(self: *Page, observer: *MutationObserver) void {
+pub fn unregisterMutationObserver(self: *Page, observer: *MutationObserver) void {
     self._mutation_observers.remove(&observer.node);
 }
 

src/browser/webapi/MutationObserver.zig

@@ -55,7 +55,6 @@ pub const ObserveOptions = struct {
 pub fn init(callback: js.Function, page: *Page) !*MutationObserver {
     return page._factory.create(MutationObserver{
         ._callback = callback,
-        .node = .{},
     });
 }