[sil-opt] Fix to satisfy all trapping instruction case at SILInstruction::mayTrap

Author: freddi-kit

lib/SIL/IR/SILInstruction.cpp

@@ -1266,6 +1266,7 @@ bool SILInstruction::mayTrap() const {
   case SILInstructionKind::CondFailInst:
   case SILInstructionKind::UnconditionalCheckedCastInst:
   case SILInstructionKind::UnconditionalCheckedCastAddrInst:
+  case SILInstructionKind::UnconditionalCheckedCastValueInst:
     return true;
   default:
     return false;