codegen_llvm_back: remove explicit returns

Author: ljedrz

src/librustc_codegen_llvm/back/archive.rs

@@ -85,14 +85,14 @@ impl<'a> ArchiveBuilder<'a> {
         }
 
         let archive = self.src_archive.as_ref().unwrap().as_ref().unwrap();
-        let ret = archive.iter()
-                         .filter_map(|child| child.ok())
-                         .filter(is_relevant_child)
-                         .filter_map(|child| child.name())
-                         .filter(|name| !self.removals.iter().any(|x| x == name))
-                         .map(|name| name.to_string())
-                         .collect();
-        return ret;
+
+        archive.iter()
+               .filter_map(|child| child.ok())
+               .filter(is_relevant_child)
+               .filter_map(|child| child.name())
+               .filter(|name| !self.removals.iter().any(|x| x == name))
+               .map(|name| name.to_owned())
+               .collect()
     }
 
     fn src_archive(&mut self) -> Option<&ArchiveRO> {
@@ -293,7 +293,7 @@ impl<'a> ArchiveBuilder<'a> {
             for member in members {
                 llvm::LLVMRustArchiveMemberFree(member);
             }
-            return ret
+            ret
         }
     }
 }

src/librustc_codegen_llvm/back/link.rs

@@ -340,7 +340,8 @@ fn archive_search_paths(sess: &Session) -> Vec<PathBuf> {
     sess.target_filesearch(PathKind::Native).for_each_lib_search_path(|path, _| {
         search.push(path.to_path_buf());
     });
-    return search;
+
+    search
 }
 
 fn archive_config<'a>(sess: &'a Session,

src/librustc_codegen_llvm/back/rpath.rs

@@ -59,7 +59,8 @@ fn rpaths_to_flags(rpaths: &[String]) -> Vec<String> {
             ret.push(format!("-Wl,-rpath,{}", &(*rpath)));
         }
     }
-    return ret;
+
+    ret
 }
 
 fn get_rpaths(config: &mut RPathConfig, libs: &[PathBuf]) -> Vec<String> {
@@ -92,7 +93,8 @@ fn get_rpaths(config: &mut RPathConfig, libs: &[PathBuf]) -> Vec<String> {
 
     // Remove duplicates
     let rpaths = minimize_rpaths(&rpaths);
-    return rpaths;
+
+    rpaths
 }
 
 fn get_rpaths_relative_to_output(config: &mut RPathConfig,