A declaration of a local variable can "shadow" a parameter or another
local variable declared in an outer scope.
Since this can create confusion about which variable is referred to, it
is better to fix these diagnostics.
A variety of changes were made:
- Add curly braces to reduce the scope of a variable (ndarray_unary_op)
so that its scope has ended before the next scope where it is used
- be consistent about whether a variable is declared with for-loop scope
or not (ndarray_print_row)
- remove a declaration so that the outer variable is used, after verifying
this will function properly (insert_slice_list)
- rename a variable introduced by a macro (RUN_SUM, RUN_STD) so it does
not shadow another variable
Jeff Epler
22605c6fe9