Fix use-after-close in connect_network_socket

* src/process.c (connect_network_socket): Don’t use
external_sock_fd after closing it.  Problem found by Coverity Scan.

diff --git a/src/process.c b/src/process.c
index bdbdefabb64513a5e51d84f00c3b66243451db41..bc2ac451c9df6e742d9beedac2873c254eb67e25 100644 (file)
--- a/src/process.c
+++ b/src/process.c
@@ -3185,6 +3185,8 @@ connect_network_socket (Lisp_Object proc, Lisp_Object addrinfos,
              xerrno = errno;
              emacs_close (s);
              s = -1;
+             if (socket_to_use < 0)
+               break;
              continue;
            }
        }
@@ -3312,6 +3314,8 @@ connect_network_socket (Lisp_Object proc, Lisp_Object addrinfos,
       specpdl_ptr = specpdl + count1;
       emacs_close (s);
       s = -1;
+      if (socket_to_use < 0)
+       break;
 
 #ifdef WINDOWSNT
       if (xerrno == EINTR)