[18.0][FIX] ai_oca_bridge: avoid crash when request charset is missing#64

SMNDVC wants to merge 2 commits intoOCA:18.0OCA/ai:18.0from

SMNDVC:18.0-fix-ai-bridge-callback-charsetSMNDVC/ai:18.0-fix-ai-bridge-callback-charsetCopy head branch name to clipboard