save some lines.

src/Avalonia.Native/WindowImplBase.cs

@@ -251,10 +251,8 @@ namespace Avalonia.Native
 
         public bool RawTextInputEvent(uint timeStamp, string text)
         {
-            if (_inputRoot is null)
+            if (_inputRoot is null) 
-            {
                 return false;
-            }
             
             Dispatcher.UIThread.RunJobs(DispatcherPriority.Input + 1);
 
@@ -267,10 +265,8 @@ namespace Avalonia.Native
 
         public bool RawKeyEvent(AvnRawKeyEventType type, uint timeStamp, AvnInputModifiers modifiers, uint key)
         {
-            if (_inputRoot is null)
+            if (_inputRoot is null) 
-            {
                 return false;
-            }
             
             Dispatcher.UIThread.RunJobs(DispatcherPriority.Input + 1);
 
@@ -288,10 +284,8 @@ namespace Avalonia.Native
 
         public void RawMouseEvent(AvnRawMouseEventType type, uint timeStamp, AvnInputModifiers modifiers, AvnPoint point, AvnVector delta)
         {
-            if (_inputRoot is null)
+            if (_inputRoot is null) 
-            {
                 return;
-            }
             
             Dispatcher.UIThread.RunJobs(DispatcherPriority.Input + 1);