Cosmetics.

Source/Core/DolphinWX/Frame.cpp

@@ -1180,12 +1180,12 @@ void CFrame::DoFullscreen(bool enable_fullscreen)
 
 void CFrame::DoExclusiveFullscreen(bool enable_fullscreen)
 {
-  if (g_renderer && g_renderer->IsFullscreen() != enable_fullscreen)
+  if (!g_renderer || g_renderer->IsFullscreen() == enable_fullscreen)
-  {
+    return;
+
   bool was_unpaused = Core::PauseAndLock(true);
   g_renderer->SetFullscreen(enable_fullscreen);
   Core::PauseAndLock(false, was_unpaused);
-  }
 }
 
 const CGameListCtrl* CFrame::GetGameListCtrl() const

Source/Core/DolphinWX/Frame.h

@@ -105,8 +105,8 @@ public:
   void OnRenderParentMove(wxMoveEvent& event);
   bool RendererHasFocus();
   bool RendererIsFullscreen();
-  void DoFullscreen(bool bF);
+  void DoFullscreen(bool enable_fullscreen);
-  void DoExclusiveFullscreen(bool bF);
+  void DoExclusiveFullscreen(bool enable_fullscreen);
   void ToggleDisplayMode(bool bFullscreen);
   static void ConnectWiimote(int wm_idx, bool connect);
   void UpdateTitle(const std::string& str);

Source/Core/VideoBackends/D3D/Render.cpp

@@ -1255,7 +1255,7 @@ void Renderer::SetFullscreen(bool enable_fullscreen)
   D3D::SetFullscreenState(enable_fullscreen);
 }
 
-bool Renderer::IsFullscreen()
+bool Renderer::IsFullscreen() const
 {
   return D3D::GetFullscreenState();
 }

Source/Core/VideoBackends/D3D/Render.h

@@ -26,7 +26,7 @@ public:
   void SetInterlacingMode() override;
   void SetViewport() override;
   void SetFullscreen(bool enable_fullscreen) override;
-  bool IsFullscreen() override;
+  bool IsFullscreen() const override;
 
   // TODO: Fix confusing names (see ResetAPIState and RestoreAPIState)
   void ApplyState(bool bUseDstAlpha) override;

Source/Core/VideoCommon/RenderBase.h

@@ -73,7 +73,7 @@ public:
   virtual void SetInterlacingMode() {}
   virtual void SetViewport() {}
   virtual void SetFullscreen(bool enable_fullscreen) {}
-  virtual bool IsFullscreen() { return false; }
+  virtual bool IsFullscreen() const { return false; }
   virtual void ApplyState(bool bUseDstAlpha) {}
   virtual void RestoreState() {}
   virtual void ResetAPIState() {}