Fix buffer size offset error in PNG_Predictor
BUG=393602
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/466153005
diff --git a/core/src/fxcodec/codec/fx_codec_flate.cpp b/core/src/fxcodec/codec/fx_codec_flate.cpp
index c02f097..a12fffb 100644
--- a/core/src/fxcodec/codec/fx_codec_flate.cpp
+++ b/core/src/fxcodec/codec/fx_codec_flate.cpp
@@ -398,6 +398,7 @@
FX_LPBYTE pDestData = dest_buf;
for (int row = 0; row < row_count; row ++) {
FX_BYTE tag = pSrcData[0];
+ byte_cnt++;
if (tag == 0) {
int move_size = row_size;
if ((row + 1) * (move_size + 1) > (int)data_size) {
@@ -406,7 +407,7 @@
FXSYS_memmove32(pDestData, pSrcData + 1, move_size);
pSrcData += move_size + 1;
pDestData += move_size;
- byte_cnt += move_size + 1;
+ byte_cnt += move_size;
continue;
}
for (int byte = 0; byte < row_size && byte_cnt < (int)data_size; byte ++) {
@@ -464,7 +465,6 @@
}
pSrcData += row_size + 1;
pDestData += row_size;
- byte_cnt++;
}
FX_Free(data_buf);
data_buf = dest_buf;