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

-<p>Here's a regular code block:</p>
-<pre><code>&lt;?php
-
-echo 'Hello World!'; 
-
-?&gt;</code></pre>
-<p>Here's one that holds a list:</p>
-<pre><code>- list item
+<p>Here's a code block:</p>
+<pre><code>&lt;?php
+
+$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>
\ No newline at end of file

tests/data/code_block.md

-Here's a regular code block:
-
-    <?php
-    
-    echo 'Hello World!'; 
-	
-	?>
-
-Here's one that holds a list:
-
-    - list item
-    - another list item
-
+Here's a code block:
+
+    <?php
+    
+    $message = 'Hello World!'; 
+    echo $message;
+
+Here's one that holds a list:
+
+    - list item
+    - another list item
+