fix scrypt-jane OS X compile

[batmaninpink]

No description provided.

[bytemaster]

In file included from /Users/dlarimer/projects/BitShares/fc/src/crypto/scrypt.cpp:12:
In file included from /Users/dlarimer/projects/BitShares/fc/vendor/scrypt-jane/code/scrypt-jane-romix.h:4:
/Users/dlarimer/projects/BitShares/fc/vendor/scrypt-jane/code/scrypt-jane-salsa.h:53:1: warning: unused function 'scrypt_getROMix' [-Wunused-function]
scrypt_getROMix(void) {
^
/Users/dlarimer/projects/BitShares/fc/vendor/scrypt-jane/code/scrypt-jane-salsa.h:106:1: warning: unused function 'scrypt_test_mix' [-Wunused-function]
scrypt_test_mix(void) {
^
:6:14: error: unknown token in expression
lea rcx, [ecx*2];
^
:16:1: error: invalid instruction mnemonic 'jz'
jz scrypt_ChunkMix_sse2_no_xor1
^
:30:1: error: invalid instruction mnemonic 'jz'
jz scrypt_ChunkMix_sse2_no_xor2
^

[batmaninpink]

Ok... compiler?

[bytemaster]

Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
Target: x86_64-apple-darwin12.4.0
Thread model: posix

On Feb 21, 2014, at 4:02 PM, batmaninpink notifications@github.com wrote:

Ok... compiler?

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[batmaninpink]

Ok, I guess the old LLVM compiler does things differently, I am on:

Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.2
Thread model: posix

I will see if I can come up with something else.