Run cargo fmt/fix

src/database/mod.rs

@@ -21,6 +21,12 @@ pub struct SqliteUserDao {
     connection: SqliteConnection,
 }
 
+impl Default for SqliteUserDao {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl SqliteUserDao {
     pub fn new() -> Self {
         Self {
@@ -138,6 +144,12 @@ pub struct SqliteFavoriteDao {
     connection: Arc<Mutex<SqliteConnection>>,
 }
 
+impl Default for SqliteFavoriteDao {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl SqliteFavoriteDao {
     pub fn new() -> Self {
         SqliteFavoriteDao {
@@ -243,6 +255,12 @@ pub struct SqliteExifDao {
     connection: Arc<Mutex<SqliteConnection>>,
 }
 
+impl Default for SqliteExifDao {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl SqliteExifDao {
     pub fn new() -> Self {
         SqliteExifDao {