vim-patch:8.0.0247 (#7232)

Problem:    Under some circumstances, one needs to type Ctrl-N or Ctrl-P twice
            to have a menu entry selected. (Lifepillar)
Solution:   call ins_compl_free(). (Christian Brabandt, closes vim/vim#1411)

aed6d0b81a

src/nvim/edit.c

@@ -2406,6 +2406,7 @@ void set_completion(colnr_T startcol, list_T *list)
     ins_compl_prep(' ');
   }
   ins_compl_clear();
+  ins_compl_free();
 
   compl_direction = FORWARD;
   if (startcol > curwin->w_cursor.col)