[Bitcode] Add missing getValue() return value checks

Author: nikic

llvm/lib/Bitcode/Reader/BitcodeReader.cpp

@@ -5363,6 +5363,8 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
       Type *TokenTy = Type::getTokenTy(Context);
       Value *ParentPad = getValue(Record, Idx++, NextValueNo, TokenTy,
                                   getVirtualTypeID(TokenTy), CurBB);
+      if (!ParentPad)
+        return error("Invalid record");
 
       unsigned NumHandlers = Record[Idx++];
 
@@ -5404,6 +5406,8 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
       Type *TokenTy = Type::getTokenTy(Context);
       Value *ParentPad = getValue(Record, Idx++, NextValueNo, TokenTy,
                                   getVirtualTypeID(TokenTy), CurBB);
+      if (!ParentPad)
+        return error("Invald record");
 
       unsigned NumArgOperands = Record[Idx++];