[fractal] fractal-matrix-api: Drop redundant field initializations

[Alexandre Franke <afranke src gnome org>]

commit 14e7d2fcf5ec37c88f12d129a98762295e7c945f
Author: Zeeshan Ali <zeenix collabora co uk>
Date:   Mon Dec 10 17:15:41 2018 +0100

    fractal-matrix-api: Drop redundant field initializations
    
    Fixing clippy error:
    
    ```
    error: redundant field names in struct initialization
      --> fractal-matrix-api/src/backend/mod.rs:47:13
       |
    47 |             tx: tx,
       |             ^^^^^^ help: replace it with: `tx`
       |
       = note: `-D clippy::redundant-field-names` implied by `-D warnings`
       = help: for further information visit 
https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_field_names
    
    error: redundant field names in struct initialization
      --> fractal-matrix-api/src/model/room.rs:37:13
       |
    37 |             id: id,
       |             ^^^^^^ help: replace it with: `id`
       |
       = help: for further information visit 
https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_field_names
    
    error: redundant field names in struct initialization
      --> fractal-matrix-api/src/model/room.rs:38:13
       |
    38 |             name: name,
       |             ^^^^^^^^^^ help: replace it with: `name`
       |
       = help: for further information visit 
https://rust-lang-nursery.github.io/rust-clippy/master/index.html#redundant_field_names
    ```
    
    Related: #370

 fractal-matrix-api/src/backend/mod.rs | 2 +-
 fractal-matrix-api/src/model/room.rs  | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/fractal-matrix-api/src/backend/mod.rs b/fractal-matrix-api/src/backend/mod.rs
index bf1cea5..56f349f 100644
--- a/fractal-matrix-api/src/backend/mod.rs
+++ b/fractal-matrix-api/src/backend/mod.rs
@@ -44,7 +44,7 @@ impl Backend {
             m_direct: HashMap::new(),
         };
         Backend {
-            tx: tx,
+            tx,
             internal_tx: None,
             data: Arc::new(Mutex::new(data)),
             user_info_cache: CacheMap::new().timeout(60 * 60),
diff --git a/fractal-matrix-api/src/model/room.rs b/fractal-matrix-api/src/model/room.rs
index dab313c..ece0a64 100644
--- a/fractal-matrix-api/src/model/room.rs
+++ b/fractal-matrix-api/src/model/room.rs
@@ -34,8 +34,8 @@ pub struct Room {
 impl Room {
     pub fn new(id: String, name: Option<String>) -> Room {
         Room {
-            id: id,
-            name: name,
+            id,
+            name,
             avatar: None,
             topic: None,
             alias: None,