v0.4 build error

[mmcgee-jump]

User reported. Figure out what compiler fails this, and add it to CI also.

src/choreo/forks/fd_forks.c: In function 'slot_ctx_restore':
src/choreo/forks/fd_forks.c:240:5: error: 'err' undeclared (first use in this function); did you mean 'erf'?
240 | err = fd_slot_bank_decode_footprint( &decode_ctx, &total_sz );
| ^~~
| erf
src/choreo/forks/fd_forks.c:240:5: note: each undeclared identifier is reported only once for each function it appears in
make: *** [config/everything.mk:311: build/native/gcc/obj/choreo/forks/fd_forks.o] Error 1

[lidatong]

is this being caused by the same commit as the disco issue you alrady discussed with @ibhatt-jumptrading? 332bf47#diff-6bb379903f36e4fb7b5355954c93a11fce649e00e42c73b0ecf2044336fdcf25

looks like user is just compiling all libs (vs. just frankendancer) so dont think its a compiler issue

seems like it's a cherry pick issue that's missing another commit that declared int err earlier