Xwayland: fix View.fromWlrSurface for OR surfaces

 river/View.zig                     | 2 +-
 river/XwaylandOverrideRedirect.zig | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/river/View.zig b/river/View.zig
index 16d6036..e0961eb 100644
--- a/river/View.zig
+++ b/river/View.zig
@@ -430,7 +430,7 @@ pub fn fromWlrSurface(surface: *wlr.Surface) ?*Self {
     if (build_options.xwayland) {
         if (surface.isXWaylandSurface()) {
             const xwayland_surface = wlr.XwaylandSurface.fromWlrSurface(surface);
-            return @intToPtr(*Self, xwayland_surface.data);
+            return @intToPtr(?*Self, xwayland_surface.data);
         }
     }
     if (surface.isSubsurface()) {
diff --git a/river/XwaylandOverrideRedirect.zig b/river/XwaylandOverrideRedirect.zig
index 77cd74b..3436c4e 100644
--- a/river/XwaylandOverrideRedirect.zig
+++ b/river/XwaylandOverrideRedirect.zig
@@ -53,6 +53,8 @@ pub fn create(xwayland_surface: *wlr.XwaylandSurface) error{OutOfMemory}!*Self {
     const self = &node.data;
 
     self.* = .{ .xwayland_surface = xwayland_surface };
+    // This must be set to 0 for usage in View.fromWlrSurface()
+    xwayland_surface.data = 0;
 
     // Add listeners that are active over the the entire lifetime
     xwayland_surface.events.request_configure.add(&self.request_configure);