f tmp_file_name rather than rand_str

Author: tnull

src/io/fs_store.rs

@@ -89,8 +89,8 @@ impl KVStore for FilesystemStore {
 		// open(tmpname), write(tmpfile), fsync(tmpfile), close(tmpfile), rename(), fsync(dir)
 		let mut tmp_file_path = dest_file_path.clone();
 		let mut rng = thread_rng();
-		let rand_str: String = (0..7).map(|_| rng.sample(Alphanumeric) as char).collect();
-		let ext = format!("{}.tmp", rand_str);
+		let tmp_file_name: String = (0..7).map(|_| rng.sample(Alphanumeric) as char).collect();
+		let ext = format!("{}.tmp", tmp_file_name);
 		tmp_file_path.set_extension(ext);
 
 		let mut tmp_file = fs::File::create(&tmp_file_path)?;