Fix a smattering of memory leaks.

Originally committed to SVN as r4157.

aegisub/src/audio_provider_hd.cpp

@@ -98,10 +98,8 @@ HDAudioProvider::HDAudioProvider(AudioProvider *source) {
 	file_cache.Seek(0);
 
 	// Finish
-	if (!canceled) {
-		progress->Destroy();
-	}
-	else {
+	progress->Destroy();
+	if (canceled) {
 		file_cache.Close();
 		delete[] data;
 		throw wxString(_T("Audio loading cancelled by user"));

aegisub/src/audio_provider_ram.cpp

@@ -104,8 +104,8 @@ RAMAudioProvider::RAMAudioProvider(AudioProvider *source) {
 	}
 
 	// Clean up progress
-	if (!canceled) progress->Destroy();
-	else {
+	progress->Destroy();
+	if (canceled) {
 		Clear();
 		throw wxString(_T("Audio loading cancelled by user"));
 	}

aegisub/src/auto4_lua.cpp

@@ -254,9 +254,9 @@ namespace Automation4 {
 			// load user script
 			LuaScriptReader script_reader(GetFilename());
 			if (lua_load(L, script_reader.reader_func, &script_reader, GetPrettyFilename().mb_str(wxConvUTF8))) {
-				wxString *err = new wxString(lua_tostring(L, -1), wxConvUTF8);
-				err->Prepend(_T("Error loading Lua script \"") + GetPrettyFilename() + _T("\":\n\n"));
-				throw err->wx_str();
+				wxString err(lua_tostring(L, -1), wxConvUTF8);
+				err.Prepend(_T("Error loading Lua script \"") + GetPrettyFilename() + _T("\":\n\n"));
+				throw err;
 			}
 			_stackcheck.check_stack(1);
 			// and execute it
@@ -264,9 +264,9 @@ namespace Automation4 {
 			// don't thread this, as there's no point in it and it seems to break on wx 2.8.3, for some reason
 			if (lua_pcall(L, 0, 0, 0)) {
 				// error occurred, assumed to be on top of Lua stack
-				wxString *err = new wxString(lua_tostring(L, -1), wxConvUTF8);
-				err->Prepend(_T("Error initialising Lua script \"") + GetPrettyFilename() + _T("\":\n\n"));
-				throw err->wx_str();
+				wxString err(lua_tostring(L, -1), wxConvUTF8);
+				err.Prepend(_T("Error initialising Lua script \"") + GetPrettyFilename() + _T("\":\n\n"));
+				throw err;
 			}
 			_stackcheck.check_stack(0);
 			lua_getglobal(L, "version");
@@ -313,6 +313,12 @@ namespace Automation4 {
 			name = GetPrettyFilename();
 			description = e;
 		}
+		catch (const wxString& e) {
+			Destroy();
+			loaded = false;
+			name = GetPrettyFilename();
+			description = e;
+		}
 		catch (Script *s) {
 			// Be sure to properly propagate any scripts throw
 			throw s;

aegisub/src/dialog_progress.cpp

@@ -111,9 +111,9 @@ void DialogProgress::SetProgress(int cur,int max) {
 		else count++;
 	}
 
-	wxCommandEvent* evt = new wxCommandEvent(wxEVT_PROGRESS_UPDATE,0);
-	evt->SetInt(value);
-	AddPendingEvent(*evt);
+	wxCommandEvent evt(wxEVT_PROGRESS_UPDATE,0);
+	evt.SetInt(value);
+	AddPendingEvent(evt);
 }
 
 

aegisub/src/dialog_style_manager.cpp

@@ -746,8 +746,9 @@ void DialogStyleManager::PasteToCurrent() {
 
 	wxStringTokenizer st(data,_T('\n'));
 	while (st.HasMoreTokens()) {
+		AssStyle *s = NULL;
 		try {
-			AssStyle *s = new AssStyle(st.GetNextToken().Trim(true));
+			s = new AssStyle(st.GetNextToken().Trim(true));
 			if (s->Valid) {
 				while (AssFile::top->GetStyle(s->name) != NULL)
 					s->name = _T("Copy of ") + s->name;
@@ -763,6 +764,7 @@ void DialogStyleManager::PasteToCurrent() {
 				wxMessageBox(_("Could not parse style"), _("Could not parse style"), wxOK | wxICON_EXCLAMATION , this);
 		}
 		catch (...) {
+			delete s;
 			wxMessageBox(_("Could not parse style"), _("Could not parse style"), wxOK | wxICON_EXCLAMATION , this);
 		}
 
@@ -785,8 +787,9 @@ void DialogStyleManager::PasteToStorage() {
 
 	wxStringTokenizer st(data,_T('\n'));
 	while (st.HasMoreTokens()) {
+		AssStyle *s = NULL;
 		try {
-			AssStyle *s = new AssStyle(st.GetNextToken().Trim(true));
+			s = new AssStyle(st.GetNextToken().Trim(true));
 			if (s->Valid) {
 				while (Store.GetStyle(s->name) != NULL)
 					s->name = _T("Copy of ") + s->name;
@@ -802,6 +805,7 @@ void DialogStyleManager::PasteToStorage() {
 				wxMessageBox(_("Could not parse style"), _("Could not parse style"), wxOK | wxICON_EXCLAMATION , this);
 		}
 		catch(...) {
+			delete s;
 			wxMessageBox(_("Could not parse style"), _("Could not parse style"), wxOK | wxICON_EXCLAMATION , this);
 		}
 

aegisub/src/mkv_wrap.cpp

@@ -122,7 +122,6 @@ void MatroskaWrapper::Close() {
 	if (file) {
 		mkv_Close(file);
 		file = NULL;
-		fclose(input->fp);
 		delete input;
 	}
 	keyFrames.Clear();

aegisub/src/mkv_wrap.h

@@ -65,6 +65,7 @@ class AssFile;
 class MkvStdIO : public InputStream {
 public:
 	MkvStdIO(wxString filename);
+	~MkvStdIO() { if (fp) fclose(fp); }
 
 	/// DOCME
 	FILE *fp;