modifications to correctly print modified dihedrals, impropers

src/write_data.h

@@ -38,6 +38,8 @@ class WriteData : protected Pointers {
   FILE *fp;
   bigint nbonds_local,nbonds;
   bigint nangles_local,nangles;
+  bigint ndihedrals_local,ndihedrals;
+  bigint nimpropers_local,nimpropers;
 
   void header();
   void type_arrays();