Clang-Format: Allow empty functions to be single-line

For example

```
OIIOOutputDriver::~OIIOOutputDriver()
{
}
```

becomes

```
OIIOOutputDriver::~OIIOOutputDriver() {}
```

Saves quite some vertical space, which is especially handy for
constructors.

Pull Request: blender/blender#105594

source/blender/functions/FN_multi_function.hh

@@ -42,9 +42,7 @@ class MultiFunction {
   const Signature *signature_ref_ = nullptr;
 
  public:
-  virtual ~MultiFunction()
-  {
-  }
+  virtual ~MultiFunction() {}
 
   /**
    * The result is the same as using #call directly but this method has some additional features.