`Breakpoint related warnings' has no Up field

[Michael Elizabeth Chastain]

Oops, 'make install' on gdb HEAD just died on me.
native i686-pc-linux-gnu, red hat 8.0, texinfo 4.2.

Looks like some new texinfo needs a little adjustment, that's all.

Michael C

  makeinfo --split-size=5000000 -I /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc/../../readline/doc -I /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc/../mi -I /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc \
	  -o gdb.info /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc/gdb.texinfo
  /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc/gdb.texinfo:3312: `Breakpoint related warnings' has no Up field.
  /berman/fsf/_today_/source/gdb/HEAD/src/gdb/doc/gdb.texinfo:3312: warning: unreferenced node `Breakpoint related warnings'.
  makeinfo: Removing output file `gdb.info' due to errors; use --force to preserve.
  make[3]: *** [gdb.info] Error 2
  make[3]: Leaving directory `/berman/fsf/_today_/berman/build/target/native/gdb/HEAD/gdb/doc'
  make[2]: *** [subdir_do] Error 1
  make[2]: Leaving directory `/berman/fsf/_today_/berman/build/target/native/gdb/HEAD/gdb'
  make[1]: *** [install-only] Error 2
  make[1]: Leaving directory `/berman/fsf/_today_/berman/build/target/native/gdb/HEAD/gdb'
  make: *** [install-gdb] Error 2