[libvirt PATCH] qemu: fix potential resource leak

[Jonathon Jongsma <jjongsma@xxxxxxxxxx>]

Coverity reported a potential resource leak. While it's probably not
a real-world scenario, the code could technically jump to cleanup
between the time that vdpafd is opened and when it is used. Ensure that
it gets cleaned up in that case.

Signed-off-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
---
 src/qemu/qemu_command.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 5c4e37bd9e..cbe7a6e331 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -8135,6 +8135,7 @@ qemuBuildInterfaceCommandLine(virQEMUDriverPtr driver,
         addfdarg = g_strdup_printf("%s,opaque=%s", fdset,
                                    net->data.vdpa.devicepath);
         virCommandAddArgList(cmd, "-add-fd", addfdarg, NULL);
+        vdpafd = -1;
     }
 
     if (chardev)
@@ -8204,6 +8205,8 @@ qemuBuildInterfaceCommandLine(virQEMUDriverPtr driver,
     VIR_FREE(tapfdName);
     VIR_FREE(vhostfd);
     VIR_FREE(tapfd);
+    if (vdpafd >= 0)
+        VIR_FORCE_CLOSE(vdpafd);
     return ret;
 }
 
-- 
2.26.2