Fix is_bad_array for empty arrays

Author: MilesCranmer

src/Utils.jl

@@ -75,7 +75,7 @@ end
 
 # Fastest way to check for NaN in an array.
 # (due to optimizations in sum())
-is_bad_array(array) = !isfinite(sum(array))
+is_bad_array(array) = !(isempty(array) || isfinite(sum(array)))
 isgood(x::T) where {T<:Number} = !(isnan(x) || !isfinite(x))
 isgood(x) = true
 isbad(x) = !isgood(x)