v8.1.2: Update log file check to include 'waf' condition

Previously, the check for a selected log file didn't account for the 'waf' variable. This update adds a condition to ensure that the warning is triggered only if 'waf' is also an empty string.

app/static/js/script.js

@@ -152,7 +152,7 @@ function showLog() {
 			file = file_from_get;
 		}
 	}
-	if (file === undefined || file === null) {
+	if ((file === undefined || file === null) && waf === '') {
 		toastr.warning('Select a log file first')
 		return false;