small fixes

lib/Backend/Lower.cpp

@@ -10519,7 +10519,7 @@ Lowerer::LowerStLoopBodyCount(IR::Instr* instr)
     IR::MemRefOpnd *loopBodyCounterOpnd = IR::MemRefOpnd::New((BYTE*)(header) + Js::LoopHeader::GetOffsetOfProfiledLoopCounter(), TyUint32, this->m_func);
     instr->SetDst(loopBodyCounterOpnd);
     instr->ReplaceSrc1(instr->GetSrc1()->AsRegOpnd()->UseWithNewType(TyUint32, this->m_func));
-    IR::AutoReuseOpnd(loopBodyCounterOpnd, this->m_func);
+    IR::AutoReuseOpnd autoReuse(loopBodyCounterOpnd, this->m_func);
     m_lowererMD.ChangeToAssign(instr);
     return;
 }

lib/Runtime/Language/JavascriptOperators.cpp

@@ -8851,6 +8851,7 @@ SetElementIHelper_INDEX_TYPE_IS_NUMBER:
                 if (!descriptor.GetterSpecified() || !descriptor.SetterSpecified())
                 {
                     // Unless both getter and setter are specified, make sure we don't overwrite old accessor.
+#pragma prefast(suppress:6031, "We defaulted oldGetter and oldSetter already, so ignoring the return value here is safe")
                     obj->GetAccessors(propId, &oldGetter, &oldSetter, scriptContext);
                 }