Fixed overflow on generic ipol filters when 10bit encoding
Fixed overflow on generic ipol filters when 10bit encoding

Conflicts:
	src/strategies/generic/ipol-generic.c

ultravideo/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar,lu-zero/kvazaar