Fix GH-9518: Disabling IPv6 support disables unrelated constants

We need to properly terminate the "conditional compilation" in stub
files.

Closes GH-9520.

Author: cmb69

NEWS

@@ -16,6 +16,8 @@ PHP                                                                        NEWS
 - Standard:
   . Marked crypt()'s $string parameter as #[\SensitiveParameter]. (timwolla)
   . Fixed bug GH-9464 (build on older macOs releases). (David Bohman)
+  . Fixed bug GH-9518 (Disabling IPv6 support disables unrelated constants).
+    (cmb)
 
 01 Sep 2022, PHP 8.2.0RC1
 

ext/standard/file.stub.php

@@ -278,6 +278,7 @@
  * @cvalue PF_INET
  */
 const STREAM_PF_INET = UNKNOWN;
+#endif
 #if (!defined(PF_INET) && defined(AF_INET))
 /**
  * @var int
@@ -286,13 +287,15 @@
 const STREAM_PF_INET = UNKNOWN;
 #endif
 
+
 #ifdef HAVE_IPV6
 #ifdef PF_INET6
 /**
  * @var int
  * @cvalue PF_INET6
  */
 const STREAM_PF_INET6 = UNKNOWN;
+#endif
 #if (!defined(PF_INET6) && defined(AF_INET6))
 /**
  * @var int
@@ -308,6 +311,7 @@
  * @cvalue PF_UNIX
  */
 const STREAM_PF_UNIX = UNKNOWN;
+#endif
 #if (!defined(PF_UNIX) && defined(AF_UNIX))
 /**
  * @var int