postgenerator nests wordblanks

[unhammer]

$ echo '[[t:text:SyTAKg]]ne~tt[[/]][[t:text:SyTAKg]]lesar[[/]]' |lt-proc -p nob-nno.autopgen.bin
[[t:text:SyTAKg]]ne[[t:text:SyTAKg]]ttl[[/]]esar[[/]]

should be

[[t:text:SyTAKg]]nett[[/]][[t:text:SyTAKg]]lesar[[/]]

cf. TinoDidriksen/Transfuse#19 (comment)

[mr-martian]

fix reverted in 957bc09 due to #123