cursor: fix Xwayland unmanaged surfaceAt coordinates

The x and y coordinates for unmanaged Xwayland views were reversed
in the fullscreen branch of the surfaceAt() function.

 river/Cursor.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/river/Cursor.zig b/river/Cursor.zig
index 73f48a4..ee47992 100644
--- a/river/Cursor.zig
+++ b/river/Cursor.zig
@@ -579,7 +579,7 @@ pub fn surfaceAt(self: Self) ?SurfaceAtResult {
     if (layerSurfaceAt(output.getLayer(.overlay).*, ox, oy)) |s| return s;
 
     if (fullscreen_view) |view| {
-        if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(ly, lx)) |s| return s;
+        if (build_options.xwayland) if (xwaylandUnmanagedSurfaceAt(lx, ly)) |s| return s;
         var sx: f64 = undefined;
         var sy: f64 = undefined;
         if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {