current-amd64 build breakage with flex in m4

[Hisashi T Fujinaka <htodd%twofifty.com@localhost>]

--- dependall-m4 ---
#       lex  m4/tokenizer.c
/usr/src/obj.amd64/tooldir.NetBSD-5.99.21-amd64/bin/nblex    -otokenizer.c 
/usr/src/tools/m4/../../usr.bin/m4/tokenizer.l
/usr/src/tools/m4/../../usr.bin/m4/tokenizer.l:46: bad start condition list
/usr/src/tools/m4/../../usr.bin/m4/tokenizer.l:63: fatal parse error
/* Begin user sect3 */
*** [tokenizer.c] Error code 1
1 error
nbmake: stopped in /usr/src/tools/m4
*** [dependall-m4] Error code 2


--
Hisashi T Fujinaka - htodd%twofifty.com@localhost
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