fix a seed for rand in a Lapack test (fix JuliaLang#24155) (JuliaLang…

…#24211)

The seed was originally globally fixed in this file, but then locally scoped
as a result of JuliaLang#16940. But it was needed in the "sysv" testset.

test/linalg/lapack.jl

@@ -425,13 +425,15 @@ end
 
 @testset "sysv" begin
  @testset for elty in (Float32, Float64, Complex64, Complex128)
- A = rand(elty,10,10)
- A = A + A.' #symmetric!
- b = rand(elty,10)
- c = A \ b
- b,A = LAPACK.sysv!('U',A,b)
- @test b ≈ c
- @test_throws DimensionMismatch LAPACK.sysv!('U',A,rand(elty,11))
+ guardsrand(123) do
+ A = rand(elty,10,10)
+ A = A + A.' #symmetric!
+ b = rand(elty,10)
+ c = A \ b
+ b,A = LAPACK.sysv!('U',A,b)
+ @test b ≈ c
+ @test_throws DimensionMismatch LAPACK.sysv!('U',A,rand(elty,11))
+ end
  end
 end