Variable hi is unused

[billdenney]

In this part of npde.cpp, the variable hi is assigned, but it is not used for part of the return value of the function. I'm not sure if I'm reading the function correctly, but it seems like either the variable should be used or the lines should be removed (or I'm missing something).

nlmixr2est/src/npde.cpp

Lines 149 to 150 in 74a732e

	if (j+1 == K) hi = 2*low - curRow[j-1];
	else hi = curRow[j+1];