fix(http1): reject final chunked if missing 0 #3699
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If a chunked body had valid chunks, but ended without a `0` in the final chunk (so, just `\r\n\r\n`), it would be parsed as a valid end. Now it will be rejected as the final chunk MUST be `0\r\n\r\n`. This was partially done before, but only if there were no chunks before the final. This fixes both paths.
seanmonstar
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This is a backport of #3698 to 0.14.x.
If a chunked body had valid chunks, but ended without a
0in the final chunk (so, just\r\n\r\n), it would be parsed as a valid end. Now it will be rejected as the final chunk MUST be0\r\n\r\n.This was partially done before, but only if there were no chunks before the final. This fixes both paths.