Fixed a bug (#3024) in which master_dim wasn't getting reset by clear() in the Image library.

Documented clear()
diff --git a/user_guide/libraries/image_lib.html b/user_guide/libraries/image_lib.html
index 8566f5a..ac5e877 100644
--- a/user_guide/libraries/image_lib.html
+++ b/user_guide/libraries/image_lib.html
@@ -122,6 +122,7 @@
 <li>$this->image_lib->crop()</li>

 <li>$this->image_lib->rotate()</li>

 <li>$this->image_lib->watermark()</li>

+<li>$this-&gt;image_lib-&gt;clear()</li>

 </ul>

 

 <p>These functions return boolean TRUE upon success and FALSE for failure.  If they fail you can retrieve the

@@ -413,6 +414,9 @@
 

 

 

+<h2>$this-&gt;image_lib-&gt;clear()</h2>

+<p>The clear function resets all of the values used when processing an image. You will want to call this if you are processing images in a loop.</p>

+<p><code>$this-&gt;image_lib-&gt;clear();</code></p>

 <p>&nbsp;</p>

 <h1>Image Watermarking</h1>

 

@@ -643,8 +647,6 @@
 </tr>

 </table>

 

-

-

 </div>

 <!-- END CONTENT -->