Enable some multiple-inheritance vtables (#821)

LEGO1/lego/legoomni/src/actors/act3actor.cpp

@@ -7,3 +7,17 @@ Act3Actor::Act3Actor()
 {
 	m_unk0x1c = 0;
 }
+
+// STUB: LEGO1 0x1003fb70
+MxU32 Act3Actor::VTable0x90(float, Matrix4&)
+{
+	// TODO
+	return FALSE;
+}
+
+// STUB: LEGO1 0x1003fd90
+MxResult Act3Actor::VTable0x94(LegoPathActor*, MxBool)
+{
+	// TODO
+	return 0;
+}