mod_rest: Improve error handling during format mapping Prevents e.g. a nil, error return going directly into e.g. json encoding, resulting in "null" being returned. Further handling improvements down the line is needed.

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labels:
- Statistics
summary: 'Report malloc() stats'
---

Description
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This module collects stats from `util.pposix.meminfo` usage and reports using Prosody 0.12 APIs