Fix lint errors.

src/nvim/buffer.c

@@ -324,12 +324,13 @@ void close_buffer(win_T *win, buf_T *buf, int action, int abort_if_last)
   }
 
   if (win_valid_any_tab(win)) {
-    /* Set b_last_cursor when closing the last window for the buffer.
-     * Remember the last cursor position and window options of the buffer.
-     * This used to be only for the current window, but then options like
-     * 'foldmethod' may be lost with a ":only" command. */
-    if (buf->b_nwindows == 1)
+    // Set b_last_cursor when closing the last window for the buffer.
+    // Remember the last cursor position and window options of the buffer.
+    // This used to be only for the current window, but then options like
+    // 'foldmethod' may be lost with a ":only" command.
+    if (buf->b_nwindows == 1) {
       set_last_cursor(win);
+    }
     buflist_setfpos(buf, win,
         win->w_cursor.lnum == 1 ? 0 : win->w_cursor.lnum,
         win->w_cursor.col, TRUE);
@@ -517,8 +518,9 @@ void buf_freeall(buf_T *buf, int flags)
     goto_tabpage_win(the_curtab, the_curwin);
     unblock_autocmds();
   }
-  if (aborting())           /* autocmds may abort script processing */
+  if (aborting()) {  // autocmds may abort script processing
     return;
+  }
 
   /*
    * It's possible that autocommands change curbuf to the one being deleted.

src/nvim/ex_cmds.c

@@ -2250,23 +2250,25 @@ do_ecmd (
         xfree(new_name);
         goto theend;
       }
-      if (buf == curbuf)                /* already in new buffer */
-        auto_buf = TRUE;
-      else {
-        win_T	    *the_curwin = curwin;
+      if (buf == curbuf) {  // already in new buffer
+        auto_buf = true;
+      } else {
+        win_T *the_curwin = curwin;
 
         // Set the w_closing flag to avoid that autocommands close the window.
-        the_curwin->w_closing = TRUE;
-        if (curbuf == old_curbuf)
+        the_curwin->w_closing = true;
+        if (curbuf == old_curbuf) {
           buf_copy_options(buf, BCO_ENTER);
+        }
 
         // Close the link to the current buffer. This will set
         // curwin->w_buffer to NULL.
-        u_sync(FALSE);
+        u_sync(false);
         close_buffer(oldwin, curbuf,
-            (flags & ECMD_HIDE) || curbuf->terminal ? 0 : DOBUF_UNLOAD, FALSE);
+                     (flags & ECMD_HIDE) || curbuf->terminal ? 0 : DOBUF_UNLOAD,
+                     false);
 
-        the_curwin->w_closing = FALSE;
+        the_curwin->w_closing = false;
 
         // autocmds may abort script processing
         if (aborting() && curwin->w_buffer != NULL) {

src/nvim/ex_docmd.c

@@ -1771,7 +1771,7 @@ static char_u * do_one_cmd(char_u **cmdlinep,
 
     if (text_locked() && !(ea.argt & CMDWIN)
         && !IS_USER_CMDIDX(ea.cmdidx)) {
-      /* Command not allowed when editing the command line. */
+      // Command not allowed when editing the command line.
       errormsg = get_text_locked_msg();
       goto doend;
     }

src/nvim/ex_getln.c

@@ -1692,10 +1692,11 @@ void text_locked_msg(void)
 }
 
 char_u * get_text_locked_msg(void) {
-  if (cmdwin_type != 0)
+  if (cmdwin_type != 0) {
     return e_cmdwin;
-  else
+  } else {
     return e_secure;
+  }
 }
 
 /*

src/nvim/window.c

@@ -2052,7 +2052,7 @@ void win_close_othertab(win_T *win, int free_buf, tabpage_T *tp)
 
   if (win->w_buffer != NULL) {
     // Close the link to the buffer.
-    close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, FALSE);
+    close_buffer(win, win->w_buffer, free_buf ? DOBUF_UNLOAD : 0, false);
   }
 
   /* Careful: Autocommands may have closed the tab page or made it the
@@ -3242,7 +3242,7 @@ void goto_tabpage(int n)
   int i;
 
   if (text_locked()) {
-    /* Not allowed when editing the command line. */
+    // Not allowed when editing the command line.
     text_locked_msg();
     return;
   }