Fix is_good_array for empty input

Author: MilesCranmer

src/Utils.jl

@@ -77,8 +77,9 @@ end
 # Thanks @mikmore https://discourse.julialang.org/t/fastest-way-to-check-for-inf-or-nan-in-an-array/76954/33?u=milescranmer
 is_bad_array(x) = !is_good_array(x)
 function is_good_array(x)
-    IS_WINDOWS && return sum(xi -> xi * zero(xi), x) == zero(eltype(x))
-    return isempty(x) || vmapreduce(xi -> xi * zero(xi), +, x) == zero(eltype(x))
+    isempty(x) && return true
+    IS_WINDOWS && return sum(xi -> xi * zero(xi), x) == 0
+    return vmapreduce(xi -> xi * zero(xi), +, x) == 0
 end
 const IS_WINDOWS = Sys.iswindows()