fix 784: dont crash on huge in-memory bodies #12

Job	Run time
Soundness / Broken symlinks check	3s
Soundness / API breakage check	3m 26s
Soundness / Documentation check	2m 14s
Soundness / License headers check	6s
Soundness / Unacceptable language check	5s
Soundness / Format check	39s
Soundness / Python lint check	13s
Soundness / Shell check	37s
Soundness / YAML lint check	3s
Cxx interop / Cxx interop / Linux (5.9)	2m 18s
Cxx interop / Cxx interop / Linux (5.10)	2m 13s
Cxx interop / Cxx interop / Linux (6.0)	2m 19s
Cxx interop / Cxx interop / Linux (nightly-6.0)	2m 58s
Cxx interop / Cxx interop / Linux (nightly-main)	2m 45s
Cxx interop / Cxx interop / Windows (6.0)	2s
Cxx interop / Cxx interop / Windows (nightly-6.0)	3s
Cxx interop / Cxx interop / Windows (nightly-main)	3s
Unit tests / Unit tests / Linux (5.9)	2m 4s
Unit tests / Unit tests / Windows (6.0)	1s
Unit tests / Unit tests / Linux (5.10)	2m 5s
Unit tests / Unit tests / Windows (nightly-6.0)	1s
Unit tests / Unit tests / Linux (6.0)	4m 35s
Unit tests / Unit tests / Windows (nightly-main)	4s
Unit tests / Unit tests / Linux (nightly-6.0)	5m 21s
Unit tests / Unit tests / Linux (nightly-main)	5m 38s
	39m 56s

Provide feedback