Fix socket leak in Accept() in case of error.o

We leaked a socket descriptor if creating the accepted socket object failed.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75952 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/socket.cpp

@@ -38,6 +38,7 @@
 
 #include "wx/apptrait.h"
 #include "wx/sckaddr.h"
+#include "wx/scopeguard.h"
 #include "wx/stopwatch.h"
 #include "wx/thread.h"
 #include "wx/evtloop.h"
@@ -527,6 +528,8 @@ wxSocketImpl *wxSocketImpl::Accept(wxSocketBase& wxsocket)
     WX_SOCKLEN_T fromlen = sizeof(from);
     const wxSOCKET_T fd = accept(m_fd, &from.addr, &fromlen);
 
+    wxScopeGuard closeSocket = wxMakeGuard(close, fd);
+
     // accepting is similar to reading in the sense that it resets "ready for
     // read" flag on the socket
     ReenableEvents(wxSOCKET_INPUT_FLAG);
@@ -542,6 +545,8 @@ wxSocketImpl *wxSocketImpl::Accept(wxSocketBase& wxsocket)
     if ( !sock )
         return NULL;
 
+    // Ownership of the socket now passes to wxSocketImpl object.
+    closeSocket.Dismiss();
     sock->m_fd = fd;
     sock->m_peer = wxSockAddressImpl(from.addr, fromlen);