rescale_rms() should use unsigned ints
Originally committed as revision 13927 to svn://svn.ffmpeg.org/ffmpeg/trunk
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				@ -171,7 +171,7 @@ static void lpc_filter(const int16_t *lpc_coefs, uint16_t *in, int len)
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    }
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}
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static unsigned int rescale_rms(int rms, int energy)
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static unsigned int rescale_rms(unsigned int rms, unsigned int energy)
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{
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    return (rms * energy) >> 10;
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}
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