setup: fix runcmd() usage on darwin
Fix one invocation of runcmd() that was missed in the recent change to
make runcmd() also return the process exit status.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true