trim extra separators

src/app/browser.rs

@@ -4,9 +4,9 @@
 use gtk::{Application, ApplicationWindow};
 
 pub fn new(
-    app : &Application,
-    width : i32,
-    height : i32
+    app: &Application,
+    width: i32,
+    height: i32
 ) -> ApplicationWindow
 {
     return ApplicationWindow::builder()

src/app/browser/main/tab.rs

@@ -16,8 +16,8 @@ pub fn new() -> Notebook
 }
 
 pub fn append(
-    tab : Notebook,
-    current : bool
+    tab: Notebook,
+    current: bool
 ) -> u32
 {
     let page = page::new();