Apply suggestions from code review

Co-authored-by: Andreas Noack <[email protected]>

Author: sethaxen

src/chol.jl

@@ -2,8 +2,8 @@ CholType{T,S<:AbstractMatrix} = Cholesky{T,S}
 chol_lower(a::Matrix) = cholesky(a).L
 
 # always use the stored cholesky factor, not a copy
-@inline chol_lower(a::CholType) = a.uplo === 'L' ? a.L : transpose(a.U)
-@inline chol_upper(a::CholType) = a.uplo === 'U' ? a.U : transpose(a.L)
+chol_lower(a::CholType) = a.uplo === 'L' ? a.L : a.U'
+@inline chol_upper(a::CholType) = a.uplo === 'U' ? a.U : a.L'
 
 if HAVE_CHOLMOD
     CholTypeSparse{T} = SuiteSparse.CHOLMOD.Factor{T}