From 622fa4d86cf3821a999e4db6d94f73b911c6752a Mon Sep 17 00:00:00 2001
From: phl0 <github@florian-wolters.de>
Date: Tue, 3 Jan 2023 15:17:10 +0100
Subject: [PATCH] Prevent passing null to htmlspecialchars

---
 application/views/search/main.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/application/views/search/main.php b/application/views/search/main.php
index e8c047ef..fac5395c 100644
--- a/application/views/search/main.php
+++ b/application/views/search/main.php
@@ -27,7 +27,7 @@
 		  <div class="form-group row">
 		    <label for="callsign" class="col-sm-2 col-form-label">Callsign / Gridsquare</label>
 		    <div class="col-sm-8">
-		      <input type="text" class="form-control" id="callsign" value="<?php echo htmlspecialchars($this->input->post('callsign')); ?>">
+		      <input type="text" class="form-control" id="callsign" value="<?php if ($this->input->post('callsign') !== null) { echo htmlspecialchars($this->input->post('callsign')); }; ?>">
 		    </div>
 		    <div class="col-sm-2">
 		    	<button onclick="searchButtonPress()" class="btn btn-outline-success my-2 my-sm-0" type="submit"><i class="fas fa-search"></i> Search</button>