Fix ref if mixed

[wsmoses]

Fixes Joe's issue

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diff --git a/src/jlrt.jl b/src/jlrt.jl
index bd622e0..503360d 100644
--- a/src/jlrt.jl
+++ b/src/jlrt.jl
@@ -366,9 +366,9 @@ function val_from_byref_if_mixed(B::LLVM.IRBuilder, gutils::GradientUtils, @nosp
     end
 end
 
-@generated function ref_if_mixed(val::VT) where VT
-    areg = active_reg_inner(VT, (), nothing, Val(true)) 
-    if areg == ActiveState || areg == MixedState
+@generated function ref_if_mixed(val::VT) where {VT}
+    areg = active_reg_inner(VT, (), nothing, Val(true))
+    return if areg == ActiveState || areg == MixedState
         quote
             Base.@_inline_meta
             Ref(val)
@@ -390,10 +390,10 @@ function byref_from_val_if_mixed(B::LLVM.IRBuilder, @nospecialize(val::LLVM.Valu
         if legal && act == AnyState
             return val
         end
-        return emit_apply_generic!(B, LLVM.Value[unsafe_to_llvm(B, ref_if_mixed), val]) 
+        return emit_apply_generic!(B, LLVM.Value[unsafe_to_llvm(B, ref_if_mixed), val])
     end
     act = active_reg_inner(TT, (), world)
-    
+
     if act == ActiveState || act == MixedState
         obj = emit_allocobj!(B, Base.RefValue{TT})
         lty = convert(LLVMType, TT)

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Benchmark Results

	main	4ef980f...	main/4ef980f02982ba...
basics/overhead	4.03 ± 0.01 ns	4.03 ± 0.001 ns	1
time_to_load	1.15 ± 0.019 s	1.13 ± 0.0021 s	1.02

Benchmark Plots

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Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).