covr fails when curly brackets in ... arguments to dbplyr::build_sql()

[ianmcook]

Minimal reprex:

Define this function in a package:

foo <- function() {
  src <- dbplyr::src_memdb()
  dbplyr::build_sql(
    {sql("foo")},
    con = src$con
  )
}

Then call it in a test. testthat::test_check() succeeds but covr::package_coverage() fails. Remove the curly brackets around sql("foo") and it succeeds.