code blocks get unwanted empty lines

Parsedown.php

@@ -216,7 +216,12 @@ class Parsedown
 			{
 				if ($element['type'] === 'code')
 				{
-					isset($element['interrupted']) and $element['text'] .= "\n";
+					if (isset($element['interrupted']))
+					{
+						$element['text'] .= "\n";
+						
+						unset ($element['interrupted']);
+					}
 					
 					$element['text'] .= "\n".$matches[1];
 				}

tests/data/code_block.html

@@ -1,9 +1,8 @@
-<p>Here's a regular code block:</p>
+<p>Here's a code block:</p>
 <pre><code>&lt;?php
 
-echo 'Hello World!'; 
-
-?&gt;</code></pre>
+$message = 'Hello World!'; 
+echo $message;</code></pre>
 <p>Here's one that holds a list:</p>
 <pre><code>- list item
 - another list item</code></pre>

tests/data/code_block.md

@@ -1,10 +1,9 @@
-Here's a regular code block:
+Here's a code block:
 
     <?php
     
-    echo 'Hello World!'; 
-	
-	?>
+    $message = 'Hello World!'; 
+    echo $message;
 
 Here's one that holds a list: