[X86] Fix equality operator ambiguity

Author: gjasny

llvm/lib/Target/X86/X86WinEHUnwindV2.cpp

@@ -232,7 +232,7 @@ bool X86WinEHUnwindV2::runOnMachineFunction(MachineFunction &MF) {
                 MF, Mode,
                 "The epilog is popping more registers than the prolog pushed");
           if (PushedRegs[PushedRegs.size() - PoppedRegCount] !=
-              MI.getOperand(0).getReg())
+              MI.getOperand(0).getReg().id())
             return rejectCurrentFunctionInternalError(
                 MF, Mode,
                 "The epilog is popping a registers in "