Cleanup unsured references, and remove incorrect comment

Author: Jlalond

lldb/source/Plugins/Process/minidump/MinidumpParser.cpp

@@ -425,7 +425,7 @@ MinidumpParser::GetExceptionStreams() {
 
   LLDB_LOG_ERROR(GetLog(LLDBLog::Process), ExpectedStream.takeError(),
                  "Failed to read minidump exception stream: {0}");
-  // return empty on failure.
+
   return std::nullopt;
 }
 

lldb/unittests/Process/minidump/MinidumpParserTest.cpp

@@ -253,9 +253,7 @@ TEST_F(MinidumpParserTest, GetExceptionStream) {
   SetUpData("linux-x86_64.dmp");
   std::optional<std::vector<const minidump::ExceptionStream *>>
       exception_stream = parser->GetExceptionStreams();
-  // LLVM::Expected has an explicit bool operator that determines if
-  // the expected value is an error or not.
-  ASSERT_TRUE((bool)exception_stream);
+  ASSERT_TRUE(exception_stream);
   ASSERT_EQ(1UL, exception_stream->size());
   ASSERT_EQ(11UL, exception_stream->at(0)->ThreadId);
 }

llvm/lib/Object/Minidump.cpp

@@ -9,7 +9,6 @@
 #include "llvm/Object/Minidump.h"
 #include "llvm/Object/Error.h"
 #include "llvm/Support/ConvertUTF.h"
-#include <iostream>
 
 using namespace llvm;
 using namespace llvm::object;