Fix GH-9316: $http_response_header is wrong for long status line

ext/standard/http_fopen_wrapper.c

@@ -717,6 +717,10 @@ static php_stream *php_stream_url_wrap_http_ex(php_stream_wrapper *wrapper,
 				if (tmp_line_len >= 1 &&tmp_line[tmp_line_len - 1] == '\r') {
 					--tmp_line_len;
 				}
+			} else {
+				// read and discard rest of status line
+				char *line = php_stream_get_line(stream, NULL, 0, NULL);
+				efree(line);
 			}
 			ZVAL_STRINGL(&http_response, tmp_line, tmp_line_len);
 			zend_hash_next_index_insert(Z_ARRVAL_P(response_header), &http_response);

ext/standard/tests/http/gh9316.phpt

@@ -0,0 +1,38 @@
+--TEST--
+Bug GH-9316 ($http_response_header is wrong for long status line)
+--SKIPIF--
+<?php require 'server.inc'; http_server_skipif(); ?>
+--INI--
+allow_url_fopen=1
+--FILE--
+<?php
+require 'server.inc';
+
+$responses = array(
+    "data://text/plain,HTTP/1.1 200 Some very long reason-phrase to test that this is properly handled by our code without adding a new header like  Bad: Header\r\nGood: Header\r\n\r\nBody",
+    "data://text/plain,HTTP/1.1 200 \r\nGood: Header\r\n\r\nBody",
+);
+
+['pid' => $pid, 'uri' => $uri] = http_server($responses, $output);
+
+for ($i = 0; $i < count($responses); ++$i) {
+    $f = @fopen($uri, "r");
+    var_dump($http_response_header);
+    fclose($f);
+}
+
+http_server_kill($pid);
+
+--EXPECT--
+array(2) {
+  [0]=>
+  string(126) "HTTP/1.1 200 Some very long reason-phrase to test that this is properly handled by our code without adding a new header like  "
+  [1]=>
+  string(12) "Good: Header"
+}
+array(2) {
+  [0]=>
+  string(13) "HTTP/1.1 200 "
+  [1]=>
+  string(12) "Good: Header"
+}