message: fixes problem where android won't compile because of a moved variable by using the var as a reference
diff: @@ -153,7 +153,7 @@ impl LibvcxDefaultLogger {
  let pattern = pattern.or(env::var("RUST_LOG").ok());
  if cfg!(target_os = "android") {
  #[cfg(target_os = "android")]
  - let log_filter = match pattern {
  + let log_filter = match pattern.as_ref() {
  Some(val) => match val.to_lowercase().as_ref() {
  "error" => Filter::default().with_min_level(log::Level::Error),
  "warn" => Filter::default().with_min_level(log::Level::Warn),
  