Update src/sparse/stdlib_sparse_kinds.fypp

Co-authored-by: Jeremie Vandenplas <jeremie.vandenplas@gmail.com>

Author: jalvesz

src/sparse/stdlib_sparse_kinds.fypp

@@ -368,7 +368,7 @@ contains
         self%nnz   = br*bc*bnnz
 
         if(.not.allocated(self%col)) then
-            allocate(temp_idx(bnnz) , source = 0 )
+            allocate(temp_idx(bnnz) , source = 0_ilp )
         else
             allocate(temp_idx(bnnz) , source = self%col )
         end if