Remove pointless empty destructors

An explicit empty destructor is only needed when a class has a smart
pointer to an incomplete type.

aegisub/src/ass_dialogue.h

@@ -49,9 +49,6 @@ enum AssBlockType {
 	BLOCK_DRAWING
 };
 
-class AssOverrideParameter;
-class AssOverrideTag;
-
 std::size_t hash_value(wxString const& s);
 
 /// @class AssDialogueBlock
@@ -104,7 +101,6 @@ public:
 class AssDialogueBlockOverride : public AssDialogueBlock {
 public:
 	AssDialogueBlockOverride(wxString const& text = wxString()) : AssDialogueBlock(text) { }
-	~AssDialogueBlockOverride();
 
 	std::vector<AssOverrideTag> Tags;
 

aegisub/src/ass_exporter.cpp

@@ -57,9 +57,6 @@ AssExporter::AssExporter(agi::Context *c)
 {
 }
 
-AssExporter::~AssExporter () {
-}
-
 void AssExporter::DrawSettings(wxWindow *parent, wxSizer *target_sizer) {
 	is_default = false;
 	for (auto filter : *AssExportFilterChain::GetFilterList()) {

aegisub/src/ass_exporter.h

@@ -63,7 +63,6 @@ class AssExporter {
 
 public:
 	AssExporter(agi::Context *c);
-	~AssExporter();
 
 	/// Get the names of all registered export filters
 	wxArrayString GetAllFilterNames() const;

aegisub/src/ass_override.cpp

@@ -423,9 +423,6 @@ void parse_parameters(AssOverrideTag *tag, const wxString &text, AssOverrideTagP
 }
 
 // From ass_dialogue.h
-AssDialogueBlockOverride::~AssDialogueBlockOverride() {
-}
-
 void AssDialogueBlockOverride::ParseTags() {
 	Tags.clear();
 

aegisub/src/audio_box.cpp

@@ -137,8 +137,6 @@ AudioBox::AudioBox(wxWindow *parent, agi::Context *context)
 	audioDisplay->SetAmplitudeScale(pow(mid(1, VerticalZoom->GetValue(), 100) / 50.0, 3));
 }
 
-AudioBox::~AudioBox() { }
-
 BEGIN_EVENT_TABLE(AudioBox,wxSashWindow)
 	EVT_COMMAND_SCROLL(Audio_Horizontal_Zoom, AudioBox::OnHorizontalZoom)
 	EVT_COMMAND_SCROLL(Audio_Vertical_Zoom, AudioBox::OnVerticalZoom)

aegisub/src/audio_box.h

@@ -86,7 +86,6 @@ class AudioBox : public wxSashWindow {
 
 public:
 	AudioBox(wxWindow *parent, agi::Context *context);
-	~AudioBox();
 
 	void ShowKaraokeBar(bool show);
 

aegisub/src/audio_renderer.cpp

@@ -91,10 +91,6 @@ AudioRenderer::AudioRenderer()
 	SetHeight(1);
 }
 
-AudioRenderer::~AudioRenderer()
-{
-}
-
 void AudioRenderer::SetMillisecondsPerPixel(double new_pixel_ms)
 {
 	if (pixel_ms == new_pixel_ms) return;

aegisub/src/audio_renderer.h

@@ -143,12 +143,6 @@ public:
 	/// provider must be set before the audio renderer is functional.
 	AudioRenderer();
 
-	/// @brief Destructor
-	///
-	/// Only destroys internal data, audio provider and bitmap providers are
-	/// owned by the consumer of audio rendering.
-	~AudioRenderer();
-
 	/// @brief Set horizontal zoom
 	/// @param pixel_ms Milliseconds per pixel to render audio at
 	///

aegisub/src/dialog_about.cpp

@@ -32,9 +32,6 @@
 /// @ingroup configuration_ui
 ///
 
-
-////////////
-// Includes
 #include "config.h"
 
 #include <wx/button.h>
@@ -49,10 +46,6 @@
 #include "libresrc/libresrc.h"
 #include "version.h"
 
-
-/// @brief Constructor
-/// @param parent Parent frame.
-///
 AboutScreen::AboutScreen(wxWindow *parent)
 : wxDialog (parent, -1, _("About Aegisub"), wxDefaultPosition, wxDefaultSize, wxCAPTION | wxCLOSE_BOX , _("About Aegisub"))
 {
@@ -157,11 +150,3 @@ AboutScreen::AboutScreen(wxWindow *parent)
 	SetSizerAndFit(MainSizer);
 	CentreOnParent();
 }
-
-
-/// @brief Destructor
-///
-AboutScreen::~AboutScreen () {
-}
-
-

aegisub/src/dialog_about.h

@@ -39,5 +39,4 @@
 class AboutScreen: public wxDialog {
 public:
 	AboutScreen(wxWindow *parent);
-	~AboutScreen();
 };

aegisub/src/visual_tool.cpp

@@ -69,9 +69,6 @@ VisualToolBase::VisualToolBase(VideoDisplay *parent, agi::Context *context)
 	parent->Bind(wxEVT_MOUSE_CAPTURE_LOST, &VisualToolBase::OnMouseCaptureLost, this);
 }
 
-VisualToolBase::~VisualToolBase() {
-}
-
 void VisualToolBase::OnCommit(int type) {
 	holding = false;
 	dragging = false;

aegisub/src/visual_tool.h

@@ -151,7 +151,7 @@ public:
 	virtual void Draw()=0;
 	virtual void SetDisplayArea(int x, int y, int w, int h);
 	virtual void SetToolbar(wxToolBar *) { }
-	virtual ~VisualToolBase();
+	virtual ~VisualToolBase() { }
 };
 
 /// Visual tool base class containing all common feature-related functionality