[libFuzzer] record traces from the switch statements only when told to do so

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243768 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Fuzzer/FuzzerTraceState.cpp

@@ -364,6 +364,7 @@ void TraceState::TraceCmpCallback(uintptr_t PC, size_t CmpSize, size_t CmpType,
 void TraceState::TraceSwitchCallback(uintptr_t PC, size_t ValSizeInBits,
                                      uint64_t Val, size_t NumCases,
                                      uint64_t *Cases) {
+  if (!RecordingTraces) return;
   for (size_t i = 0; i < NumCases; i++)
     TryToAddDesiredData(Val, Cases[i], ValSizeInBits / 8);
 }