dalvik: Fix leak in error condition in FindClass

Release trackedLoader for all exit points in FindClass

Change-Id: I2da26ed6253c2b1b9381bff394596245b993602c
setting RLIMIT to INFINITY.

This is to generate coredumps for processes spawned by zygote

Change-Id: I2dbac76fbcaa7be3845ba5e12ad064548a25e2e3