AudioEffect JNI: fix queryEffects()

Some effects supported by the platform may not be
returned to JAVA layer because not visible by applications.
The size of the array of effect descriptors
returned must be adjusted so that no entry in the array is null.

Bug: 17453177.
Change-Id: I3baaacf24bcb0fa45ce50461a1ac3d6eaa67f4b9
1 file changed