Divide by zero in 'cping.cpp'

Building and running the sample client bin.X64\cping.exe /i /l localhost, I got a divide by zero exception at this line:

s_rllCycles[E_DCOM] /= s_rllCounts[E_DCOM];

Not sure why. Some issue with incorrect CPU-speed calculation?
But I patched it like this:

--- a/samples/cping/cping.cpp 2022-12-24 09:26:38
+++ b/samples/cping/cping.cpp 2022-12-24 12:55:27
@@ -384,14 +384,19 @@
     DumpCycles(E_NET);
 #endif

-    s_rllCycles[E_DCOM] /= s_rllCounts[E_DCOM];
-    s_rllCycles[E_RPC] /= s_rllCounts[E_DCOM];
-    s_rllCycles[E_UDP] /= s_rllCounts[E_DCOM];
-    s_rllCycles[E_NET] /= s_rllCounts[E_DCOM];
-    s_rllTotals[E_DCOM] /= s_rllCounts[E_DCOM];
-    s_rllTotals[E_RPC] /= s_rllCounts[E_DCOM];
-    s_rllTotals[E_UDP] /= s_rllCounts[E_DCOM];
-    s_rllTotals[E_NET] /= s_rllCounts[E_DCOM];
+#define SAFE_DIV(res, div) do {             \
+                             if (div)       \
+                                res /= div; \
+                           } while (0)
+
+    SAFE_DIV (s_rllCycles[E_DCOM], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllCycles[E_RPC], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllCycles[E_UDP], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllCycles[E_NET], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllTotals[E_DCOM], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllTotals[E_RPC], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllTotals[E_UDP], s_rllCounts[E_DCOM]);
+    SAFE_DIV (s_rllTotals[E_NET], s_rllCounts[E_DCOM]);

Start in samples/cping/cping.cpp at the division near line 387, then run bin.X64\cping.exe /i /l localhost to reproduce the exception. Compare the reported SAFE_DIV patch with the surrounding counter calculations and verify that the sample completes without a divide-by-zero exception when s_rllCounts[E_DCOM] is zero.