delete if(!=nullptr)

Author: Qianruipku

source/driver.cpp

@@ -93,7 +93,7 @@ void Driver::atomic_world(void)
 	// lcao: linear combination of atomic orbitals
 	//--------------------------------------------------
 	string use_ensol;
-	ModuleESolver::ESolver *p_esolver;
+	ModuleESolver::ESolver *p_esolver = nullptr;
 	if(GlobalV::BASIS_TYPE=="pw" || GlobalV::BASIS_TYPE=="lcao_in_pw")
 	{
 		if(GlobalV::CALCULATION.substr(0,3) == "sto")	use_ensol = "sdft_pw";

source/module_esolver/esolver.cpp

@@ -45,10 +45,7 @@ namespace ModuleESolver
 
     void clean_esolver(ESolver*& pesolver)
     {
-        if (pesolver != nullptr)
-        {
-            delete pesolver;
-        }
+        delete pesolver;
     }
 
 }

source/module_esolver/esolver_fp.cpp

@@ -14,7 +14,7 @@ namespace ModuleESolver
     }
     ESolver_FP::~ESolver_FP()
     {
-        if(pw_rho!=nullptr)    delete pw_rho;
+        delete pw_rho;
     }
     void ESolver_FP::Init(Input& inp, UnitCell_pseudo& cell)
     {

source/module_esolver/esolver_ks.cpp

@@ -38,10 +38,10 @@ namespace ModuleESolver
 
     ESolver_KS::~ESolver_KS()
     {
-        if(this->pw_wfc != nullptr)   delete this->pw_wfc;
-        if(this->pelec != nullptr)    delete this->pelec;
-        if(this->phami != nullptr)    delete this->phami;
-        if(this->phsol != nullptr)    delete this->phsol;
+        delete this->pw_wfc;
+        delete this->pelec;
+        delete this->phami;
+        delete this->phsol;
     }
 
     void ESolver_KS::Init(Input& inp, UnitCell_pseudo& ucell)