slightly more info for bogoutil segfault

[Clint Adams]

> Breaks how?

flex -olexer_v3.c ../../bogofilter/src/lexer_v3.l
if gcc -DHAVE_CONFIG_H -I. -I../../bogofilter/src -I.  -I../../bogofilter/src/dcdflib/doc  -DBOGOFILTER -g -O2  -Wall -W -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Waggregate-return -Wmissing-declarations -Wmissing-format-attribute -Wnested-externs -ggdb -fno-common -Wchar-subscripts -Wcomment -Wimplicit -Wsequence-point -Wreturn-type -Wfloat-equal -Wpointer-arith -Wno-system-headers -MT lexer_v3.o -MD -MP -MF ".deps/lexer_v3.Tpo" \
  -c -o lexer_v3.o `test -f 'lexer_v3.c' || echo '../../bogofilter/src/'`lexer_v3.c; \
then mv -f ".deps/lexer_v3.Tpo" ".deps/lexer_v3.Po"; \
else rm -f ".deps/lexer_v3.Tpo"; exit 1; \
fi
lexer_v3.c:39001: warning: no previous prototype for `lexer_v3_get_lineno'
lexer_v3.c:39010: warning: no previous prototype for `lexer_v3_get_in'
lexer_v3.c:39018: warning: no previous prototype for `lexer_v3_get_out'
lexer_v3.c:39026: warning: no previous prototype for `lexer_v3_get_leng'
lexer_v3.c:39035: warning: no previous prototype for `lexer_v3_get_text'
lexer_v3.c:39044: warning: no previous prototype for `lexer_v3_set_lineno'
lexer_v3.c:39056: warning: no previous prototype for `lexer_v3_set_in'
lexer_v3.c:39061: warning: no previous prototype for `lexer_v3_set_out'
lexer_v3.c:39066: warning: no previous prototype for `lexer_v3_get_debug'
lexer_v3.c:39071: warning: no previous prototype for `lexer_v3_set_debug'
lexer_v3.c:39077: warning: no previous prototype for `lexer_v3_lex_destroy'
../../bogofilter/src/lexer_v3.l: In function `reorder_html':
../../bogofilter/src/lexer_v3.l:284: error: `yytext_ptr' undeclared (first use in this function)
../../bogofilter/src/lexer_v3.l:284: error: (Each undeclared identifier is reported only once
../../bogofilter/src/lexer_v3.l:284: error: for each function it appears in.)