SCUMM: Initialize data to avoid Valgrind warnings on saving

This is enough to silence all the Valgrind warnings I got when saving in
The Dig.

engines/scumm/actor.h

@@ -67,9 +67,9 @@ struct CostumeData {
 	uint16 frame[16];
 
 	/* HE specific */
-	uint16 heJumpOffsetTable[16];
-	uint16 heJumpCountTable[16];
-	uint32 heCondMaskTable[16];
+	uint16 heJumpOffsetTable[16] = {};
+	uint16 heJumpCountTable[16] = {};
+	uint32 heCondMaskTable[16] = {};
 
 	void reset() {
 		animCounter = 0;

engines/scumm/imuse_digi/dimuse_fades.cpp

@@ -155,6 +155,14 @@ void IMuseDigiFadesHandler::clearAllFades() {
 	for (int l = 0; l < DIMUSE_MAX_FADES; l++) {
 		_fades[l].status = 0;
 		_fades[l].sound = 0;
+		_fades[l].param = 0;
+		_fades[l].currentVal = 0;
+		_fades[l].counter = 0;
+		_fades[l].length = 0;
+		_fades[l].slope = 0;
+		_fades[l].slopeMod = 0;
+		_fades[l].modOvfloCounter = 0;
+		_fades[l].nudge = 0;
 	}
 	_fadesOn = 0;
 }

engines/scumm/imuse_digi/dimuse_files.h

@@ -40,7 +40,7 @@ class IMuseDigiFilesHandler {
 	ScummEngine_v7 *_vm;
 	Common::Mutex _mutex;
 	IMuseDigiSndBuffer _soundBuffers[4];
-	char _currentSpeechFilename[60];
+	char _currentSpeechFilename[60] = {};
 	ScummFile *_ftSpeechFile;
 	char _ftSpeechFilename[160];
 	int _ftSpeechSubFileOffset;

engines/scumm/imuse_digi/dimuse_tracks.cpp

@@ -49,6 +49,17 @@ int IMuseDigital::tracksInit() {
 		_tracks[l].dispatchPtr = dispatchGetDispatchByTrackId(l);
 		_tracks[l].dispatchPtr->trackPtr = &_tracks[l];
 		_tracks[l].soundId = 0;
+		_tracks[l].group = 0;
+		_tracks[l].marker = 0;
+		_tracks[l].priority = 0;
+		_tracks[l].vol = 0;
+		_tracks[l].effVol = 0;
+		_tracks[l].pan = 0;
+		_tracks[l].detune = 0;
+		_tracks[l].transpose = 0;
+		_tracks[l].pitchShift = 0;
+		_tracks[l].mailbox = 0;
+		_tracks[l].jumpHook = 0;
 		_tracks[l].syncSize_0 = 0;
 		_tracks[l].syncSize_1 = 0;
 		_tracks[l].syncSize_2 = 0;

engines/scumm/imuse_digi/dimuse_triggers.cpp

@@ -42,8 +42,34 @@ int IMuseDigiTriggersHandler::deinit() {
 int IMuseDigiTriggersHandler::clearAllTriggers() {
 	for (int l = 0; l < DIMUSE_MAX_TRIGGERS; l++) {
 		_trigs[l].sound = 0;
+		memset(_trigs[l].text, 0, sizeof(_trigs[l].text));
+		_trigs[l].opcode = 0;
+		_trigs[l].a = 0;
+		_trigs[l].b = 0;
+		_trigs[l].c = 0;
+		_trigs[l].d = 0;
+		_trigs[l].e = 0;
+		_trigs[l].f = 0;
+		_trigs[l].g = 0;
+		_trigs[l].h = 0;
+		_trigs[l].i = 0;
+		_trigs[l].j = 0;
 		_trigs[l].clearLater = 0;
+	}
+
+	for (int l = 0; l < DIMUSE_MAX_DEFERS; l++) {
 		_defers[l].counter = 0;
+		_defers[l].opcode = 0;
+		_defers[l].a = 0;
+		_defers[l].b = 0;
+		_defers[l].c = 0;
+		_defers[l].d = 0;
+		_defers[l].e = 0;
+		_defers[l].f = 0;
+		_defers[l].g = 0;
+		_defers[l].h = 0;
+		_defers[l].i = 0;
+		_defers[l].j = 0;
 	}
 	_defersOn = 0;
 	_midProcessing = 0;

engines/scumm/saveload.cpp

@@ -53,7 +53,7 @@ struct SaveGameHeader {
 	uint32 type;
 	uint32 size;
 	uint32 ver;
-	char name[32];
+	char name[32] = {};
 };
 
 struct SaveInfoSection {