fix gated graph conv

Author: CarloLucibello

GNNLux/src/layers/conv.jl

@@ -1261,7 +1261,7 @@ LuxCore.parameterlength(l::GatedGraphConv) = parameterlength(l.gru) + l.dims^2*l
 
 function (l::GatedGraphConv)(g, x, ps, st)
     gru = StatefulLuxLayer{true}(l.gru, ps.gru, _getstate(st, :gru))
-    fgru = (h, x) -> gru((x, (h,)))  # make the forward compatible with Flux.GRUCell style
+    fgru = (x, h) -> gru((x, (h,)))[1]  # make the forward compatible with Flux.GRUCell style
     m = (; gru=fgru, ps.weight, l.num_layers, l.aggr, l.dims)
     return GNNlib.gated_graph_conv(m, g, x), st
 end

GNNlib/src/layers/conv.jl

@@ -228,7 +228,7 @@ function gated_graph_conv(l, g::GNNGraph, x::AbstractMatrix)
         m = view(l.weight, :, :, i) * h
         m = propagate(copy_xj, g, l.aggr; xj = m)
         # in gru forward, hidden state is first argument, input is second
-        h, _ = l.gru(h, m)
+        h = l.gru(m, h)
     end
     return h
 end