vim: move disptick_T from vim.h to syntax_defs.h

Make vim.h smaller, bit by bit.

src/nvim/globals.h

@@ -13,6 +13,7 @@
 #include "nvim/ex_eval.h"
 #include "nvim/mbyte.h"
 #include "nvim/menu.h"
+#include "nvim/syntax_defs.h"
 
 /*
  * definition of global variables

src/nvim/syntax.c

@@ -42,6 +42,7 @@
 #include "nvim/regexp.h"
 #include "nvim/screen.h"
 #include "nvim/strings.h"
+#include "nvim/syntax_defs.h"
 #include "nvim/term.h"
 #include "nvim/ui.h"
 #include "nvim/os/os.h"

src/nvim/syntax_defs.h

@@ -9,6 +9,8 @@
 # define SST_DIST        16     /* normal distance between entries */
 # define SST_INVALID    (synstate_T *)-1        /* invalid syn_state pointer */
 
+typedef unsigned short disptick_T;      /* display tick type */
+
 /* struct passed to in_id_list() */
 struct sp_syn {
   int inc_tag;                  /* ":syn include" unique tag */

src/nvim/vim.h

@@ -355,8 +355,6 @@ enum {
 #define PERROR(msg) \
   (void) emsg3((char_u *) "%s: %s", (char_u *)msg, (char_u *)strerror(errno))
 
-typedef unsigned short disptick_T;      /* display tick type */
-
 #define SHOWCMD_COLS 10                 /* columns needed by shown command */
 #define STL_MAX_ITEM 80                 /* max nr of %<flag> in statusline */