[groff] 20/35: src/roff/troff/node.cpp: Fix code style nit.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 5faaa8dead225e329112e4ace7e81184b3aed237
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Mon Jun 20 14:01:09 2022 -0500

    src/roff/troff/node.cpp: Fix code style nit.
    
    * src/roff/troff/node.cpp (mount_font_no_translate): Annotate null
      pointers with `nullptr` comment to ease any future transition to
      C++11, which defines it as a keyword.
---
 src/roff/troff/node.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/roff/troff/node.cpp b/src/roff/troff/node.cpp
index a82e55cc..37786705 100644
--- a/src/roff/troff/node.cpp
+++ b/src/roff/troff/node.cpp
@@ -5949,13 +5949,13 @@ static bool mount_font_no_translate(int n, symbol name,
   // We store the address of this char in `font_dictionary` to indicate
   // that we've previously tried to mount the font and failed.
   static char a_char;
-  font *fm = 0;
+  font *fm = 0 /* nullptr */;
   void *p = font_dictionary.lookup(external_name);
-  if (p == 0) {
+  if (0 /* nullptr */ == p) {
     fm = font::load_font(external_name.contents(), check_only);
     if (check_only)
-      return fm != 0;
-    if (!fm) {
+      return fm != 0 /* nullptr */;
+    if (0 /* nullptr */ == fm) {
       (void)font_dictionary.lookup(external_name, &a_char);
       return false;
     }
@@ -5975,7 +5975,7 @@ static bool mount_font_no_translate(int n, symbol name,
     }
     grow_font_table(n);
   }
-  else if (font_table[n] != 0)
+  else if (font_table[n] != 0 /* nullptr */)
     delete font_table[n];
   font_table[n] = new font_info(name, n, external_name, fm);
   font_family::invalidate_fontno(n);