Files
FFmpeg/libavfilter
realies c6c11b0b6d avfilter/af_loudnorm: fix limiter buffer over-allocation
The limiter_buf was being allocated with buf_size (3000ms worth of
samples) instead of limiter_buf_size (210ms worth of samples).

This resulted in allocating approximately 14x more memory than needed
for the limiter buffer. At 192kHz stereo:
- buf_size: 1,152,000 samples = 9.2 MB
- limiter_buf_size: 80,640 samples = 0.6 MB
- Wasted: ~8.2 MB per filter instance

The bug was introduced when the limiter buffer was added but the
wrong size variable was used in av_malloc_array().
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