Call dynamorio_process_exit is not 16 byte aligned (Linux x86-32)

Created by: SweetVishnya

Hi!

I run my x86-32 DynamoRIO client on Linux (Release build). I get unaligned stack here:

0xf7eb81f3 <cat_done_saving_dstack+16>  call   0xf7ddfaf0 <dynamo_process_exit>

#13 0xf7e3fc26 in instrument_exit_event () at /data/predicate_solving/dynamorio/core/lib/instrument.c:871
#14 0xf7dcbdd0 in dynamo_process_exit () at /data/predicate_solving/dynamorio/core/dynamo.c:1554
#15 0xf7ea41f8 in cat_done_saving_dstack ()
#16 0xf7ea4257 in cat_have_lock ()

This leads to further crash in my client due to XMM usage.

0xf663d332 <_ZN15prime_generator22process_next_k_numbersEy+290> movaps XMMWORD PTR [ebp-0xe8],xmm3