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gcc -pedantic had "comparison of unsigned expression < 0 is always false"

--- a/celt/quant_bands.c

+++ b/celt/quant_bands.c

@@ -323,7 +323,9 @@

       nstart_bytes = ec_range_bytes(&enc_start_state);

       nintra_bytes = ec_range_bytes(&enc_intra_state);

       intra_buf = ec_get_buffer(&enc_intra_state) + nstart_bytes;

-      save_bytes = IMAX(ALLOC_NONE, nintra_bytes-nstart_bytes);

+      save_bytes = nintra_bytes-nstart_bytes;

+      if (save_bytes == 0)

+         save_bytes = ALLOC_NONE;

       ALLOC(intra_bits, save_bytes, unsigned char);

       /* Copy bits from intra bit-stream */

       OPUS_COPY(intra_bits, intra_buf, nintra_bytes - nstart_bytes);