Found one more place that converts chrono::duration to timeval

Old and new code snippets yield the same optimized assembly:
https://godbolt.org/z/4rr3WPc9e

Old and new getCurrentTime() have nearly identical optimized assembly
(with minor differences due to current_time being a global that new
getCurrentTime() is still using to compute the other two globals). Both
assembly version have eight memory accesses:
https://godbolt.org/z/E9hc48G1K

The number of assembly operations can be reduced further by not using
current_time global to compute current_dtime and squid_curtime:
https://godbolt.org/z/4rr3WPc9e

src/time/gadgets.cc

@@ -25,8 +25,7 @@ getCurrentTime()
     using namespace std::chrono;
     const auto now = system_clock::now().time_since_epoch();
 
-    current_time.tv_sec = duration_cast<seconds>(now).count();
-    current_time.tv_usec = duration_cast<microseconds>(now).count() % 1000000;
+    current_time = ToTimeval(now);
 
     current_dtime = (double) current_time.tv_sec +
                     (double) current_time.tv_usec / 1000000.0;