HDB: Fix more memory leaks

engines/hdb/file-manager.cpp

@@ -29,6 +29,8 @@ namespace HDB {
 
 FileMan::FileMan() {
 	_mpcFile = new Common::File;
+	for (uint i = 0; i < _dir.size(); i++)
+		delete _dir[i];
 }
 
 FileMan::~FileMan() {

engines/hdb/gfx.cpp

@@ -52,6 +52,13 @@ Gfx::~Gfx() {
 	for (int i = 0; i < _fontHeader.numChars; i++)
 		_fontSurfaces[i].free();
 	_globalSurface.free();
+	delete[] _tLookupArray;
+	for (int i = 0; i < 8; i++)
+		delete _mousePointer[i];
+	for (int i = 0; i < 4; i++)
+		delete _starField[i];
+	delete _snowflake;
+	delete _skyClouds;
 }
 
 bool Gfx::init() {

engines/hdb/map.cpp

@@ -41,6 +41,10 @@ Map::Map() {
 }
 
 Map::~Map() {
+	delete[] _background;
+	delete[] _foreground;
+	delete[] _iconList;
+
 	free(_mapExplosions);
 	free(_mapExpBarrels);
 	free(_mapLaserBeams);