Print min max and avg in diff_ts histogram

Fix mistake in print_histogram function

packet-exchange/src/client.c

@@ -435,7 +435,7 @@ static void print_histograms() {
 
   printf("# Packet TX timestamps histogram\n");
 
-  for (int j = 0; j < max_hist_val; j++)
+  for (int j = 0; j <= max_hist_val; j++)
     printf("%06d %015" PRIi64 "\n", j, histogram[j]);
 
   printf(

packet-exchange/src/server.c

@@ -497,13 +497,16 @@ static void print_histograms() {
 
     max_latency = histogram_max(diff_ts_hist, MAX_DIFF_TS - 1);
 
-    for (int j = 0; j < max_latency; j++)
+    for (int j = 0; j <= max_latency; j++)
       printf(" %06d %015" PRIi64 "\n", j, diff_ts_hist[j]);
 
     printf(
         "# Duration: %dh%d\n"
-        "# Lost packets: %" PRIu64 "\n",
-        duration_hour, duration_minutes, high_diff_ts);
+        "# Lost packets: %" PRIu64 "\n"
+        "# Min: %" PRIi64 "\n"
+        "# Max: %" PRIi64 "\n"
+        "# Avg: %" PRIi64 "\n",
+        duration_hour, duration_minutes, high_diff_ts, min_diff_ts, max_diff_ts, avg_diff_ts);
   }
   else {
 
@@ -515,7 +518,7 @@ static void print_histograms() {
 
       printf("# Packet RX timestamps histogram\n");
 
-      for (int j = 0; j < max_latency; j++)
+      for (int j = 0; j <= max_latency; j++)
         printf(" %06d %015" PRIi64 "\n", j, kernel_latency_hist[j]);
 
       printf(
@@ -527,7 +530,7 @@ static void print_histograms() {
 
     printf("# Packet jitter histogram\n");
 
-    for (int j = min_jitter; j < max_jitter; j++)
+    for (int j = min_jitter; j <= max_jitter; j++)
       printf(" %06d %015" PRIi64 "\n", j, jitter_hist[j]);
 
     printf(