[sift] Fix data type for syscall return value to be native word size (ADDRINT rather than INT32) so negative system call return values are passed back correctly
[sift] Fix data type for syscall return value to be native word size (ADDRINT rather than INT32) so negative system call return values are passed back correctly

abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper,abanaiyan/sniper