Ignore error logging warning

[Zodiac1978]

Fixes #31

[stklcode]

Looks like it could be convenient to move the if-defined-ignore-error_log block into a method and just use self::debug_log( '...' ); in all 5 places.

	/**
	 * Log error message, if WP_DEBUG is enabled.
	 *
	 * @param string $message Error message.
	 */
	private static function debug_log( $message ) {
		if ( defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG ) {
			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
			error_log( $message );
		}
	}

[2ndkauboy]

Having a function makes sense to me as well.

[stklcode]

Silencing the warning is OK.

Hope my additional changes are as well.