Do not print version numbers longer than 32 chars

If the returned version number during version check is longer than 32 bytes
it means that probably the request failed.
In this case we suppress and ignore it.

src/main.cpp

@@ -150,7 +150,8 @@ static char * main_check_latest_version() {
 
 void * main_check_latest_version_thread(void *arg) {
 	char * latest_version = main_check_latest_version();
-	if (latest_version) {
+	// we check for potential invalid data , see issue #4042 
+	if (latest_version != NULL && strlen(latest_version) < 32) {
 		if (
 			(know_latest_version == NULL) // first check
 			|| (strcmp(know_latest_version,latest_version)) // new version detected