[Code scan] Delete OFDFT KEDF_Manager with scalar delete

[njzjz]

This issue is a result of a Codex global repository scan.

ESolver_OF::before_all_runners() deletes kedf_manager_ with delete[], but the pointer is allocated with scalar new KEDF_Manager() and the destructor uses scalar delete. Re-entering this setup path can therefore invoke undefined behavior / heap corruption.

Declaration:

abacus-develop/source/source_esolver/esolver_of.h

Lines 30 to 34 in 84ca04b

	protected:
	// ======================= variables ==========================
	// ---------- the kinetic energy density functionals ----------
	KEDF_Manager* kedf_manager_ = nullptr; // KEDF manager, which will be initialized in before_all_runners

Destructor and reinitialization path:

abacus-develop/source/source_esolver/esolver_of.cpp

Lines 51 to 54 in 84ca04b

	delete this->ptemp_rho_;
	delete this->kedf_manager_;

abacus-develop/source/source_esolver/esolver_of.cpp

Lines 122 to 124 in 84ca04b

	delete[] this->kedf_manager_;
	this->kedf_manager_ = new KEDF_Manager();
	this->kedf_manager_->init(inp, this->pw_rho, this->dV_, this->nelec_[0]);

Relevant code:

KEDF_Manager* kedf_manager_ = nullptr;
...
delete this->kedf_manager_;
...
delete[] this->kedf_manager_;
this->kedf_manager_ = new KEDF_Manager();

Suggested fix:

Use scalar delete in before_all_runners(), set the pointer to nullptr after deletion, or replace this raw owner with std::unique_ptr<KEDF_Manager>.