Refactoring: Use accessor methods when manipulating sparse matrices/vectors (#32953)

* Use accessor methods when touching SparseMatrixCSC

Author: tkf

stdlib/Statistics/src/Statistics.jl

@@ -8,6 +8,7 @@ Standard library module for basic statistics functionality.
 module Statistics
 
 using LinearAlgebra, SparseArrays
+using SparseArrays: getcolptr
 
 using Base: has_offset_axes, require_one_based_indexing
 
@@ -1003,9 +1004,9 @@ function centralize_sumabs2!(R::AbstractArray{S}, A::SparseMatrixCSC{Tv,Ti}, mea
     isempty(R) || fill!(R, zero(S))
     isempty(A) && return R
 
-    colptr = A.colptr
-    rowval = A.rowval
-    nzval = A.nzval
+    colptr = getcolptr(A)
+    rowval = rowvals(A)
+    nzval = nonzeros(A)
     m = size(A, 1)
     n = size(A, 2)