alpine crashes or becomes non-responsive when saving some messages with deleted attachments

After upgrading the package 'alpine' from 2.22+dfsg1-1 (from focal 20.04LTS) to 2.24+dfsg1-1 (groovy 20.10), alpine crashed at least a few times while saving certain messages in gmail (being accessed through IMAP). The only common step I could see that that I was saving those messages after deleting the attachments.

When I removed that package and installed the older version of alpine (2.21+dfsg1-1build1), alpine was able to correctly save the same message after deleting attachments.

I am not an expert and so don't know what information is relevant to be posted. Below is some basic information.

```
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.10
Release: 20.10
Codename: groovy

$ alpine -v
Alpine 2.24 (DEB 510 2020-10-10) built Tue Oct 13 19:47:59 UTC 2020 on debian
Alpine was built with the following options:
CFLAGS=-g -O2 -fdebug-prefix-map=/build/alpine-tJbhjF/alpine-2.24+dfsg1=. -fstack-protector-strong -Wformat -Werror=format-security
LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed
CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2
./configure --build=x86_64-linux-gnu --prefix=/usr \
  --includedir=${prefix}/include --mandir=${prefix}/share/man \
  --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var \
  --disable-option-checking --disable-silent-rules \
  --libdir=${prefix}/lib/x86_64-linux-gnu --runstatedir=/run \
  --disable-maintainer-mode --disable-dependency-tracking \
  --with-system-pinerc=/etc/pine.conf \
  --with-system-fixed-pinerc=/etc/pinerc.fixed \
  --with-passfile=.pine-passfile --with-smtp-msa=/usr/sbin/sendmail \
  --with-debug-level=0 --with-date-stamp=Tue Oct 13 19:47:59 UTC 2020 \
  --with-host-stamp=debian --without-tcl --with-krb5 --with-krb5-dir=/usr \
  build_alias=x86_64-linux-gnu
```