Bullet proofing some args theme devs leave out of their global array.

Signed-off-by: Kev Provance <kevin.provance@gmail.com>

Author: kprovance

redux-core/inc/classes/class-redux-output.php

@@ -177,6 +177,8 @@ public function enqueue() {
 
 				$typography = new Redux_Typography( null, null, $core );
 
+				$core->args['disable_google_fonts_link'] = ( ! isset( $core->args['disable_google_fonts_link'] ) ? false : $core->args['disable_google_fonts_link'] );
+var_dump($core->args['disable_google_fonts_link']);
 				if ( ! $core->args['disable_google_fonts_link'] ) {
 					$url = $typography->make_google_web_font_link( Redux_Core::$typography );
 					wp_enqueue_style( 'redux-google-fonts-' . $core->args['opt_name'], $url, array(), $version );

redux-core/inc/fields/typography/class-redux-typography.php

@@ -1017,7 +1017,10 @@ public function make_google_web_font_link( array $fonts ): string {
 			if ( ! empty( $subsets ) ) {
 				$link .= '&subset=' . implode( ',', $subsets );
 			}
-			$link .= '&display=' . $this->parent->args['font_display'];
+
+			$display = $this->parent->args['font_display'] ?? 'swap';
+
+			$link .= '&display=' . $display;
 
 			// return 'https://fonts.bunny.net/css?family=' . $link;
 			return 'https://fonts.googleapis.com/css?family=' . $link;