From 61cdd6c0d0cfe12036364471a21405490537c812 Mon Sep 17 00:00:00 2001
From: Jean-Marie RENOUARD <jmrenouard@gmail.com>
Date: Wed, 4 Apr 2018 15:20:27 +0200
Subject: [PATCH] Trim sub with emtpy string display error #376

---
 mysqltuner.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mysqltuner.pl b/mysqltuner.pl
index 2bb7c09..22ec64c 100755
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -5059,6 +5059,7 @@ sub mariadb_connect {
 # Perl trim function to remove whitespace from the start and end of the string
 sub trim {
     my $string = shift;
+    return "" unless defined($string);
     $string =~ s/^\s+//;
     $string =~ s/\s+$//;
     return $string;