fetchurl: builder.sh: handle `urls` as a Bash array

Clean up leftover for commit cd13136f036d
("fetchurl: use __structuredAttrs = true and pass curlOptsList directly")

Continue the work of commit 23236b331d06
("fetchurl: fix handling of fallback URLs"),
addressing a Bash array re-assignment quirk:
when assigning a Bash array variable as if it were a plain variable,
the value goes to the first element,
and the rest of the array stays the same.

```console
$ foo=(a b)
$ declare -p foo
declare -a foo=([0]="a" [1]="b")
$ foo="c d"
$ declare -p foo
declare -a foo=([0]="c d" [1]="b")
```

Don't rewrite the `${urls[@]}` with resolved URLs,
but hold them with `${resolvedUrls[@]}` instead.

Co-authored-by: Matt Sturgeon <matt@sturgeon.me.uk>
Co-authored-by: Wolfgang Walther <walther@technowledgy.de>

0 files changed, 0 insertions, 0 deletions