[Outliner] ACTUALLY remove the errs output

I don't know how to type. This fixes the last commit which would have made all
of the overflows legal, and kept the screaming.

llvm-svn: 298263

llvm/lib/Target/AArch64/AArch64InstrInfo.cpp

@@ -4349,7 +4349,7 @@ AArch64InstrInfo::getOutliningType(MachineInstr &MI) const {
       // This is tricky to test with IR tests, but when the outliner is moved
       // to a MIR test, it really ought to be checked.
       if (Offset + 16 < MinOffset || Offset + 16 > MaxOffset)
-        errs() << "Overflow!\n";
+	return MachineOutlinerInstrType::Illegal;
 
       // It's in range, so we can outline it.
       return MachineOutlinerInstrType::Legal;