Fixed stray comma in JSON output when selecting a device other than the first.

src/terminal.c

@@ -1899,14 +1899,18 @@ void status_display_status_json (hashcat_ctx_t *hashcat_ctx)
   printf (" \"rejected\": %" PRIu64 ",", hashcat_status->progress_rejected);
   printf (" \"devices\": [");
 
-  for (int device_id = 0; device_id < hashcat_status->device_info_cnt; device_id++)
+  for (int device_id = 0, first_dev = 1; device_id < hashcat_status->device_info_cnt; device_id++)
   {
     const device_info_t *device_info = hashcat_status->device_info_buf + device_id;
 
     if (device_info->skipped_dev == true) continue;
     if (device_info->skipped_warning_dev == true) continue;
 
-    if (device_id != 0)
+    if (first_dev)
+    {
+      first_dev = 0;
+    }
+    else
     {
       printf (",");
     }