message: Fix warnings in c_simple_ast_builder
diff: @@ -934,14 +934,13 @@ impl CASTDataMapVerifier {
  #[cfg(test)]
  mod test {
  - use backend::lang_c::{c_ast, c_simple_ast, c_simple_ast_builder};
  + use backend::lang_c::c_simple_ast;
  use backend::lang_c::c_simple_ast_builder::{CASTBuilder, CASTDataMap, CASTBuilderVerifier,
  CASTDataMapVerifier};
  use frontend::radeco_containers::RadecoFunction;
  use frontend::radeco_source::SourceErr;
  use middle::ir_reader;
  use middle::regfile::SubRegisterFile;
  - use middle::ssa::verifier;
  use r2api::structs::LRegInfo;
  use serde_json;
  use std::collections::HashMap;
  @@ -979,11 +978,11 @@ mod test {
  rfn
  }
  - const files: [&'static str; 2] = ["./test_files/bin1_main_ssa", "./test_files/loopy_main_ssa"];
  + const FILES: [&'static str; 2] = ["./test_files/bin1_main_ssa", "./test_files/loopy_main_ssa"];
  #[test]
  fn c_ast_data_map_test() {
  - for file in files.iter() {
  + for file in FILES.iter() {
  let mut rfn = load("./test_files/bin1_main_ssa");
  let mut datamap = CASTDataMap::new(&rfn);
  let mut cast = c_simple_ast::SimpleCAST::new(rfn.name.as_ref());
  @@ -994,7 +993,7 @@ mod test {
  #[test]
  fn c_ast_builder_test() {
  - for file in files.iter() {
  + for file in FILES.iter() {
  let mut rfn = load("./test_files/bin1_main_ssa");
  let dummy_map = HashMap::new();
  let mut builder = CASTBuilder::new(&rfn, &dummy_map);
  