Apply missing flag to vector4/projection

core/io/marshalls.cpp

@@ -1155,10 +1155,12 @@ Error encode_variant(const Variant &p_variant, uint8_t *r_buffer, int &r_len, bo
 #ifdef REAL_T_IS_DOUBLE
 		case Variant::VECTOR2:
 		case Variant::VECTOR3:
+		case Variant::VECTOR4:
 		case Variant::PACKED_VECTOR2_ARRAY:
 		case Variant::PACKED_VECTOR3_ARRAY:
 		case Variant::TRANSFORM2D:
 		case Variant::TRANSFORM3D:
+		case Variant::PROJECTION:
 		case Variant::QUATERNION:
 		case Variant::PLANE:
 		case Variant::BASIS: