Don't wait for x-www-browser to exit before returning

(Temporary solution to resolve by far the most likely place for this
command to block in headless test conditions.)

src/lib.rs

@@ -283,7 +283,12 @@ fn open_browser_internal(browser: Browser, url: &str) -> Result<ExitStatus> {
  .or_else(|_| -> Result<ExitStatus> {
  Command::new("kioclient").arg("exec").arg(url).status()
  })
- .or_else(|_| -> Result<ExitStatus> { Command::new("x-www-browser").arg(url).status() }),
+ .or_else(|e| -> Result<ExitStatus> {
+ if let Ok(_child) = Command::new("x-www-browser").arg(url).spawn() {
+ return Ok(ExitStatusExt::from_raw(0));
+ }
+ Err(e)
+ }),
  _ => Err(Error::new(
  ErrorKind::NotFound,
  "Only the default browser is supported on this platform right now",