[lldb] Fix timer logging inverted quiet condition

[kastiglione]

Summary

The logic of g_quiet was inverted in D26243. This corrects the issue.

Without this, running log timers enable produces a high volume of incremental
timer output.

[JDevlieghere]

LGTM

lldb/source/Utility/Timer.cpp

 void Timer::SetQuiet(bool value) { g_quiet = value; }
 
 Timer::Timer(Timer::Category &category, const char *format, ...)
     : m_category(category), m_total_start(std::chrono::steady_clock::now()) {
   Signposts->startInterval(this, m_category.GetName());
   TimerStack &stack = GetTimerStackForCurrentThread();
 
   stack.push_back(this);
-  if (g_quiet && stack.size() <= g_display_depth) {
+  if (!g_quiet && stack.size() <= g_display_depth) {
     std::lock_guard<std::mutex> lock(GetFileMutex());
 
     // Indent
     ::fprintf(stdout, "%*s", int(stack.size() - 1) * TIMER_INDENT_AMOUNT, "");
     // Print formatted string
     va_list args;
     va_start(args, format);
     ::vfprintf(stdout, format, args);
Timer::~Timer() {
 
   auto stop_time = steady_clock::now();
   auto total_dur = stop_time - m_total_start;
   auto timer_dur = total_dur - m_child_duration;
 
   Signposts->endInterval(this, m_category.GetName());
 
   TimerStack &stack = GetTimerStackForCurrentThread();
-  if (g_quiet && stack.size() <= g_display_depth) {
+  if (!g_quiet && stack.size() <= g_display_depth) {
     std::lock_guard<std::mutex> lock(GetFileMutex());
     ::fprintf(stdout, "%*s%.9f sec (%.9f sec)\n",
               int(stack.size() - 1) * TIMER_INDENT_AMOUNT, "",
               duration<double>(total_dur).count(),
               duration<double>(timer_dur).count());
   }
 
   assert(stack.back() == this);