Update preg_match_shapes.php

Author: staabm

tests/PHPStan/Analyser/nsrt/preg_match_shapes.php

@@ -637,6 +637,12 @@ function (string $s): void {
 	}
 };
 
+function (string $s): void {
+	if (preg_match('/( .* )/x', $s, $matches)) {
+		assertType('array{string, string}', $matches);
+	}
+};
+
 function (string $s): void {
 	if (preg_match('/( .+ )/x', $s, $matches)) {
 		assertType('array{string, non-empty-string}', $matches);