[ci skip] Polish changes from PR bcit-ci#3278

Author: narfbg

system/libraries/Image_lib.php

@@ -1212,7 +1212,7 @@ public function overlay_watermark()
 			imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);
 		}
 
- 		// We can preserve transparency for PNG images
+		// We can preserve transparency for PNG images
 		if ($this->image_type === 3)
 		{
 			imagealphablending($src_img, FALSE);
@@ -1803,4 +1803,4 @@ public function display_errors($open = '<p>', $close = '</p>')
 }
 
 /* End of file Image_lib.php */
-/* Location: ./system/libraries/Image_lib.php */
+/* Location: ./system/libraries/Image_lib.php */

user_guide_src/source/changelog.rst

@@ -336,7 +336,7 @@ Release Date: Not Released
       -  Class properties *wm_font_color*, *wm_shadow_color* and *wm_use_drop_shadow* are now protected, to avoid breaking the ``text_watermark()`` method if they are set manually after initialization.
       -  If property *maintain_ratio* is set to TRUE, ``image_reproportion()`` now doesn't need both width and height to be specified.
       -  Property *maintain_ratio* is now taken into account when resizing images using ImageMagick library.
-      -  Added support for maintaining transparency for PNG images in method ``text_watermark()``.
+      -  Added support for maintaining transparency for PNG images when watermarking.
       -  Added a **file_permissions** setting.
 
    -  :doc:`Form Validation Library <libraries/form_validation>` changes include: