upgrade to dbus 1.0.2_1 fails because docs don't build

[stephen@…]

Turnbull-Stephen% sudo port upgrade outdated          
Password:
--->  Deactivating dbus 0.92_1
--->  Verifying checksum(s) for dbus
--->  Extracting dbus
--->  Configuring dbus
--->  Building dbus with target all
Error: Target com.apple.build returned: shell command "cd "/opt/local/var/db/dports/build/_Users_steve_Software_MacPorts_dports_devel_dbus/work/dbus-1.0.2" && make all" returned error 2
Command output:   -p postprocopts pass option to postprocessor
  --extensions    turn on stylesheet extensions for this tool chain
  --searchpath    colon-separated list of fallback directories
  --skip-validation
                  do not attempt to validate the input before processing

Available FORMATs depend on the type of the XML file (which is
determined automatically).

For documents of type "docbook":
dvi
fo
html
html-nochunks
htmlhelp
javahelp
man
pdf
ps
txt
xhtml
xhtml-nochunks

For documents of type "fo":
dvi
pdf
ps
make[2]: *** [dbus-faq.html] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

[css@…]

Might this be the same bug as #11305?

[pguyot@…]

This definitely is the same as #11305.