fix: do delete before new tau_original in atom_spec.cpp

Author: pxlxingliang

source/module_cell/atom_spec.cpp

@@ -142,6 +142,7 @@ void Atom::bcast_atom(void)
     {
         assert(na!=0);
         delete[] tau;
+        delete[] tau_original;
 		delete[] taud;
 	    delete[] vel;
         delete[] mag;