Unify line break style in HashMap.h.

Source/Urho3D/Container/HashMap.h

@@ -724,10 +724,7 @@ private:
 namespace std
 {
 
-template <class T, class U> typename Urho3D::HashMap<T, U>::ConstIterator begin(const Urho3D::HashMap<T, U>& v)
-{
-    return v.Begin();
-}
+template <class T, class U> typename Urho3D::HashMap<T, U>::ConstIterator begin(const Urho3D::HashMap<T, U>& v) { return v.Begin(); }
 
 template <class T, class U> typename Urho3D::HashMap<T, U>::ConstIterator end(const Urho3D::HashMap<T, U>& v) { return v.End(); }