Return stack overflow in seedForth-tokenizer.fs

[cstrotm]

when tokenizing seedForthInteractive.seedsource with

gforth seedForth-tokenizer.fs seedForthInteractive.seedsource

stops with

in file included from *the terminal*:0
in file included from *the terminal*:-1
seedForthInteractive.seedsource:277: error: Return stack overflow
ESC[0;4m>>>ESC[0;7mESC[0;4m<<<t{ -2147483648 2147483647 <  -> -1 }t  \ 32bit $80000000 $7FFFFFFF
Backtrace:
seedForth-tokenizer.fs:39:5              0 $B722A280 pad
seedForth-tokenizer.fs:42:47             1 $B722A308 submit
seedForth-tokenizer.fs:66:12             2 $B722A608 submit-token
seedForth-tokenizer.fs:84:4              3 $B722ACF4 execute
[...]

using Gforth 0.7.9_20190912 on Debian 10 32bit