Make sure that the landingpad instruction takes a Constant* as the clause's value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136326 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -2550,7 +2550,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
           return Error("Invalid LANDINGPAD record");
         }
 
-        LP->addClause(CT, Val);
+        LP->addClause(CT, cast<Constant>(Val));
       }
 
       I = LP;