Use empty() instead of comparing size() with zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46514 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -1327,7 +1327,7 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
     }
     
     case bitc::FUNC_CODE_INST_RET: // RET: [opty,opval<optional>]
-      if (Record.size() == 0) {
+      if (Record.empty()) {
         I = new ReturnInst();
         break;
       } else {

lib/Bitcode/Reader/Deserialize.cpp

@@ -115,7 +115,7 @@ void Deserializer::ReadRecord() {
   if (Stream.AtEndOfStream())
     return;
   
-  assert (Record.size() == 0);
+  assert (Record.empty());
   assert (AbbrevNo >= bitc::UNABBREV_RECORD);
   RecordCode = Stream.ReadRecord(AbbrevNo,Record);
   assert (Record.size() > 0);