Update src/ProtocolZoo/swapping.jl

Co-authored-by: Lars Göttgens <[email protected]>

src/ProtocolZoo/swapping.jl

@@ -73,7 +73,7 @@ end
             continue
         end
         # The compiler is not smart enough to figure out that qubit_pair_ is not nothing, so we need to tell it explicitly. A new variable name is needed due to @resumable.
-        qubit_pair = qubit_pair_::NTuple{2, Base.NamedTuple{(:slot, :id, :tag), Base.Tuple{RegRef, Int128, Tag}}}
+        qubit_pair = qubit_pair_::NTuple{2, Base.NamedTuple{(:slot, :id, :tag), Base.Tuple{RegRef, Int128, Tag}}} # TODO: replace by `NTuple{2, @NamedTuple{slot::RegRef, id::Int128, tag::Tag}}` once https://github.com/JuliaDynamics/ResumableFunctions.jl/issues/104 is resolved
 
         (q1, id1, tag1) = qubit_pair[1].slot, qubit_pair[1].id, qubit_pair[1].tag
         (q2, id2, tag2) = qubit_pair[2].slot, qubit_pair[2].id, qubit_pair[2].tag