Fix return type of ListOfNonstandardBridges (#29)

This is now checked
jump-dev/MathOptInterface.jl#2665

Author: blegat

src/MOI_wrapper.jl

@@ -67,7 +67,7 @@ function MOI.default_cache(::Optimizer, ::Type{Float64})
 end
 
 function MOI.get(::Optimizer, ::MOI.Bridges.ListOfNonstandardBridges)
-    return [ScaledPSDConeBridge{Float64}]
+    return Type[ScaledPSDConeBridge{Float64}]
 end
 
 MOI.get(::Optimizer, ::MOI.SolverName) = "SeDuMi"