Fix memory leak if calling SoapServer::setObject() twice

Closes GH-14380.

Author: nielsdos

NEWS

@@ -29,6 +29,7 @@ PHP                                                                        NEWS
 - Soap:
   . Fixed bug #47925 (PHPClient can't decompress response). (nielsdos)
   . Fix missing error restore code. (nielsdos)
+  . Fix memory leak if calling SoapServer::setObject() twice. (nielsdos)
 
 - Sodium:
   . Fix memory leaks in ext/sodium on failure of some functions. (nielsdos)

ext/soap/soap.c

@@ -959,6 +959,7 @@ PHP_METHOD(SoapServer, setObject)
 
 	service->type = SOAP_OBJECT;
 
+	zval_ptr_dtor(&service->soap_object);
 	ZVAL_OBJ_COPY(&service->soap_object, Z_OBJ_P(obj));
 
 	SOAP_SERVER_END_CODE();

ext/soap/tests/bugs/setObject_twice.phpt

@@ -0,0 +1,14 @@
+--TEST--
+SOAP Server: SoapServer::setObject twice
+--EXTENSIONS--
+soap
+--FILE--
+<?php
+$foo = new stdClass();
+$server = new SoapServer(null,array('uri'=>"http://testuri.org"));
+$server->setObject($foo);
+$server->setObject($foo);
+echo "Done\n";
+?>
+--EXPECT--
+Done