Newer "makeinfo" throws lots of errors

I recently ran a "port upgrade" on my Mac laptop which appears to have
bumped the version of makeinfo (texi2any) to 7.3. This version
produces a lot of errors from "make info" about bad node linkage,
which I do not see when using texi2any version 7.1 on a ubuntu VM.

The first 20-odd lines are these:

./zsh.texi:115: warning: unexpected node `Author' in menu
./zsh.texi:127: warning: unexpected node `Compatibility' in menu
./zsh.texi:133: warning: unexpected node `Simple Commands & Pipelines' in menu
./zsh.texi:138: warning: unexpected node `Comments' in menu
./zsh.texi:146: warning: unexpected node `History Expansion' in menu
./zsh.texi:159: warning: unexpected node `Array Parameters' in menu
./zsh.texi:162: warning: unexpected node `Parameters Set by the Shell' in menu
./zsh.texi:169: warning: unexpected node `Specifying Options' in menu
./zsh.texi:178: warning: unexpected node `Keymaps' in menu
./zsh.texi:183: warning: unexpected node `Character Highlighting' in menu
./zsh.texi:189: warning: unexpected node `Completion Special Parameters' in menu
./zsh.texi:199: warning: unexpected node `Initialization' in menu
./zsh.texi:211: warning: unexpected node `Command Flags' in menu
./zsh.texi:222: warning: unexpected node `The zsh/attr Module' in menu
./zsh.texi:268: warning: unexpected node `Calendar File and Date
Formats' in menu
./zsh.texi:278: warning: unexpected node `TCP Functions' in menu
./zsh.texi:287: warning: unexpected node `Installation' in menu
./zsh.texi:295: warning: unexpected node `Utilities' in menu

All the rest are of the format

warning: node up pointer for <thing> is <other thing> but up is `Top' in menu

That is, "up is `Top' in menu" is the commonality.

The resulting zsh.texi files have identical cksum on the two hosts, so
this is mostly just annoying, but I'm reporting in case anyone knows
of a fix.