fix new[]/delete mismatches and a memory leak in USER-DIFFRACTION package

src/USER-DIFFRACTION/compute_saed.cpp

@@ -281,7 +281,7 @@ ComputeSAED::~ComputeSAED()
 {
   memory->destroy(vector);
   memory->destroy(store_tmp);
-  delete ztype;
+  delete[] ztype;
 }
 
 /* ---------------------------------------------------------------------- */

src/USER-DIFFRACTION/compute_xrd.cpp

@@ -247,7 +247,7 @@ ComputeXRD::~ComputeXRD()
 {
   memory->destroy(array);
   memory->destroy(store_tmp);
-  delete ztype;
+  delete[] ztype;
 }
 
 /* ---------------------------------------------------------------------- */

src/USER-DIFFRACTION/fix_saed_vtk.cpp

@@ -287,6 +287,8 @@ FixSAEDVTK::FixSAEDVTK(LAMMPS *lmp, int narg, char **arg) :
 FixSAEDVTK::~FixSAEDVTK()
 {
   delete [] extlist;
+  delete [] filename;
+  delete [] ids;
   memory->destroy(vector);
   memory->destroy(vector_total);
   if (fp && me == 0) fclose(fp);