This patch fixes two warnings, one related to a narrowing conversion (int to MachInst), and one due to the cast operator for arguments and a mismatch in const-ness (const void* and void*).
--HG-- extra : convert_revision : 3321bb91da02c1bec27fa34d0ba945cc976b6491
--HG-- extra : convert_revision : f2d80ae551b7e29426141d5c9fe355b43a0b9c7d