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	Fix small entropy analysis bug.
Change-Id: I70554b5a898b38930dfd03ca1ed78a075261e84b
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		| @@ -198,12 +198,10 @@ static int AnalyzeEntropy(const uint32_t* argb, | ||||
|     const uint32_t* prev_row = argb; | ||||
|     const uint32_t* curr_row = argb + argb_stride; | ||||
|     for (y = 1; y < height; ++y) { | ||||
|       uint32_t prev_pix = curr_row[0]; | ||||
|       for (x = 1; x < width; ++x) { | ||||
|         const uint32_t pix = curr_row[x]; | ||||
|         const uint32_t pix_diff = VP8LSubPixels(pix, prev_pix); | ||||
|         const uint32_t pix_diff = VP8LSubPixels(pix, curr_row[x - 1]); | ||||
|         if ((pix_diff == 0) || (pix == prev_row[x])) continue; | ||||
|         prev_pix = pix; | ||||
|         AddSingle(pix, | ||||
|                   &histo[kHistoAlpha * 256], | ||||
|                   &histo[kHistoRed * 256], | ||||
|   | ||||
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