Fix wait for thread not started

drivers/alsa/audio_driver_alsa.cpp

@@ -339,7 +339,9 @@ void AudioDriverALSA::finish_output_device() {
 
 void AudioDriverALSA::finish() {
 	exit_thread.set();
+	if (thread.is_started()) {
 		thread.wait_to_finish();
+	}
 
 	finish_output_device();
 }

drivers/alsamidi/midi_driver_alsamidi.cpp

@@ -207,7 +207,9 @@ Error MIDIDriverALSAMidi::open() {
 
 void MIDIDriverALSAMidi::close() {
 	exit_thread.set();
+	if (thread.is_started()) {
 		thread.wait_to_finish();
+	}
 
 	for (int i = 0; i < connected_inputs.size(); i++) {
 		snd_rawmidi_t *midi_in = connected_inputs[i].rawmidi_ptr;

drivers/pulseaudio/audio_driver_pulseaudio.cpp

@@ -676,7 +676,9 @@ void AudioDriverPulseAudio::finish() {
 	}
 
 	exit_thread.set();
+	if (thread.is_started()) {
 		thread.wait_to_finish();
+	}
 
 	finish_output_device();
 

drivers/wasapi/audio_driver_wasapi.cpp

@@ -930,7 +930,9 @@ void AudioDriverWASAPI::unlock() {
 
 void AudioDriverWASAPI::finish() {
 	exit_thread.set();
+	if (thread.is_started()) {
 		thread.wait_to_finish();
+	}
 
 	finish_input_device();
 	finish_output_device();

drivers/xaudio2/audio_driver_xaudio2.cpp

@@ -151,7 +151,9 @@ void AudioDriverXAudio2::unlock() {
 
 void AudioDriverXAudio2::finish() {
 	exit_thread.set();
+	if (thread.is_started()) {
 		thread.wait_to_finish();
+	}
 
 	if (source_voice) {
 		source_voice->Stop(0);

editor/editor_file_system.cpp

@@ -1256,7 +1256,9 @@ void EditorFileSystem::_notification(int p_what) {
 					if (scanning_changes_done) {
 						set_process(false);
 
+						if (thread_sources.is_started()) {
 							thread_sources.wait_to_finish();
+						}
 						bool changed = _update_scan_actions();
 						_update_pending_script_classes();
 						if (changed) {

editor/editor_help.cpp

@@ -2371,9 +2371,6 @@ void EditorHelp::update_doc() {
 
 void EditorHelp::cleanup_doc() {
 	_wait_for_thread();
-	if (doc_gen_use_threads) {
-		thread.wait_to_finish();
-	}
 	memdelete(doc);
 }
 

modules/noise/noise_texture_2d.cpp

@@ -44,7 +44,9 @@ NoiseTexture2D::~NoiseTexture2D() {
 	if (texture.is_valid()) {
 		RS::get_singleton()->free(texture);
 	}
+	if (noise_thread.is_started()) {
 		noise_thread.wait_to_finish();
+	}
 }
 
 void NoiseTexture2D::_bind_methods() {

modules/raycast/raycast_occlusion_cull.cpp

@@ -604,7 +604,9 @@ RaycastOcclusionCull::~RaycastOcclusionCull() {
 	for (KeyValue<RID, Scenario> &K : scenarios) {
 		Scenario &scenario = K.value;
 		if (scenario.commit_thread) {
+			if (scenario.commit_thread->is_started()) {
 				scenario.commit_thread->wait_to_finish();
+			}
 			memdelete(scenario.commit_thread);
 		}
 

platform/ios/export/export_plugin.cpp

@@ -1984,6 +1984,8 @@ EditorExportPlatformIOS::EditorExportPlatformIOS() {
 EditorExportPlatformIOS::~EditorExportPlatformIOS() {
 #ifndef ANDROID_ENABLED
 	quit_request.set();
+	if (check_for_changes_thread.is_started()) {
 		check_for_changes_thread.wait_to_finish();
+	}
 #endif
 }

platform/web/export/export_plugin.cpp

@@ -687,5 +687,7 @@ EditorExportPlatformWeb::~EditorExportPlatformWeb() {
 		server->stop();
 	}
 	server_quit = true;
+	if (server_thread.is_started()) {
 		server_thread.wait_to_finish();
+	}
 }

scene/3d/navigation_region_3d.cpp

@@ -270,7 +270,9 @@ void NavigationRegion3D::bake_navigation_mesh(bool p_on_thread) {
 
 void NavigationRegion3D::_bake_finished(Ref<NavigationMesh> p_nav_mesh) {
 	set_navigation_mesh(p_nav_mesh);
+	if (bake_thread.is_started()) {
 		bake_thread.wait_to_finish();
+	}
 	emit_signal(SNAME("bake_finished"));
 }
 

scene/main/http_request.cpp

@@ -190,8 +190,10 @@ void HTTPRequest::cancel_request() {
 		set_process_internal(false);
 	} else {
 		thread_request_quit.set();
+		if (thread.is_started()) {
 			thread.wait_to_finish();
 		}
+	}
 
 	file.unref();
 	decompressor.unref();

servers/audio/audio_driver_dummy.cpp

@@ -136,8 +136,10 @@ void AudioDriverDummy::mix_audio(int p_frames, int32_t *p_buffer) {
 void AudioDriverDummy::finish() {
 	if (use_threads) {
 		exit_thread.set();
+		if (thread.is_started()) {
 			thread.wait_to_finish();
 		}
+	}
 
 	if (samples_in) {
 		memdelete_arr(samples_in);

servers/audio/effects/audio_effect_record.cpp

@@ -120,7 +120,9 @@ void AudioEffectRecordInstance::init() {
 }
 
 void AudioEffectRecordInstance::finish() {
+	if (io_thread.is_started()) {
 		io_thread.wait_to_finish();
+	}
 }
 
 AudioEffectRecordInstance::~AudioEffectRecordInstance() {

servers/rendering/rendering_server_default.cpp

@@ -237,7 +237,9 @@ void RenderingServerDefault::init() {
 void RenderingServerDefault::finish() {
 	if (create_thread) {
 		command_queue.push(this, &RenderingServerDefault::_thread_exit);
+		if (thread.is_started()) {
 			thread.wait_to_finish();
+		}
 	} else {
 		_finish();
 	}