Preserve alpha in WP_Image_Editor_GD when images are not resized.
Props joehoyle see #23039 git-svn-id: https://develop.svn.wordpress.org/trunk@23884 602fd350-edb4-49c9-b593-d223f7449a82
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@ -97,6 +97,11 @@ class WP_Image_Editor_GD extends WP_Image_Editor {
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if ( ! $size )
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return new WP_Error( 'invalid_image', __('Could not read image size.'), $this->file );
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if ( function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' ) ) {
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imagealphablending( $this->image, false );
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imagesavealpha( $this->image, true );
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}
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$this->update_size( $size[0], $size[1] );
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$this->mime_type = $size['mime'];
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