Pan-0.139 won't compile

[Walter Hurry]

Trying to upgrade /usr/ports/news/pan I get this:
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mime-utils.cc: In function 'char* pan::__g_mime_iconv_strndup(void*, 
const char*, size_t, const char*)':
mime-utils.cc:80: error: invalid conversion from 'char**' to 'const 
char**'
mime-utils.cc:80: error:   initializing argument 2 of 'size_t libiconv
(void*, const char**, size_t*, char**, size_t*)'
gmake[3]: *** [mime-utils.o] Error 1
gmake[3]: Leaving directory `/usr/ports/news/pan/work/pan-0.139/pan/
usenet-utils'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory `/usr/ports/news/pan/work/pan-0.139/pan'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/ports/news/pan/work/pan-0.139'
gmake: *** [all] Error 2
*** [do-build] Error code 1

Stop in /usr/ports/news/pan.
*** [build] Error code 1
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What should I do next?