Merge pull request #452 from cloudinary/feature/wp_get_original_image_url-fallback

Check if function exists before using it

Author: pereirinha

php/connect/class-api.php

@@ -388,7 +388,10 @@ public function upload( $attachment_id, $args, $headers = array(), $try_remote =
 		$url                 = $this->url( $resource, 'upload', true );
 		$args                = $this->clean_args( $args );
 		$disable_https_fetch = get_transient( '_cld_disable_http_upload' );
-		if ( wp_attachment_is_image( $attachment_id ) ) {
+		if (
+			function_exists( 'wp_get_original_image_url' ) &&
+			wp_attachment_is_image( $attachment_id )
+		) {
 			$file_url = wp_get_original_image_url( $attachment_id );
 		} else {
 			$file_url = wp_get_attachment_url( $attachment_id );