Java Taffy Block Filter bug

[SmirAlex]

Hi! I've found an important bug in TaffyBlockFilter Java realization which causes creation of new Block Filters with the same fpp.
I guess, in this line there should be x instead of cursor.

libfilter/java/libfilter/src/main/java/com/github/jbapple/libfilter/TaffyBlockFilter.java

Line 95 in 4ebeaef

ndv, fpp / Math.pow(cursor + 1, 2) * 6 / Math.pow(Math.PI, 2));