build

osc.lua: fix duration when it becomes available #17247

Job	Run time
win32 (aarch64-pc-windows-msvc, arm64, windows-11-arm)	21m 6s
linux-fuzz	1m 47s
win32 (x86_64-pc-windows-msvc, x64, windows-2025-vs2026)	22m 59s
linux (clang, clang++, lld, -Db_lto=true -Db_lto_mode=thin)	2m 49s
mingw (i686, wine32)	4m 56s
linux-ffmpeg-6-1	1m 9s
mingw (x86_64, wine64)	6m 35s
macos (macos-15, arm)	3m 59s
msys2 (clangarm64, windows-11-arm)	6m 47s
macos (macos-14, arm, Xcode_15.0)	4m 1s
macos (macos-15-intel)	10m 33s
macos (macos-26, arm)	3m 32s
macos (macos-26, test, -target arm64-apple-macosx10.15, 10.15)	3m 40s
linux (gcc, g++, -Db_ndebug=true)	2m 12s
openbsd	5m 27s
msys2 (clang64, windows-2025-vs2026, true)	6m 18s
msys2 (clang64, windows-2025-vs2026, zero)	5m 33s
msys2 (clang64, windows-2025-vs2026, pattern)	4m 27s
msys2 (ucrt64, windows-2025-vs2026)	6m 14s
freebsd	4m 20s
msys2 (clang64, windows-2025-vs2026, uninitialized)	6m 11s
msys2 (mingw64, windows-2025-vs2026)	6m 10s
Publish git release	1m 14s
	2h 21m 59s

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