vbox: network: make sure driver is not NULL in virRegisterNetworkDriver

libvirtd will report below error if it does not make sure driver was not NULL
in virRegisterNetworkDriver

$ libvirtd
2014-10-24 09:24:36.443+0000: 28876: info : libvirt version: 1.2.10
2014-10-24 09:24:36.443+0000: 28876: error : virRegisterNetworkDriver:549 : driver in virRegisterNetworkDriver must not be NULL
2014-10-24 09:24:36.443+0000: 28876: error : virDriverLoadModule:99 : Failed module registration vboxNetworkRegister

Signed-off-by: Shanzhi Yu <shyu@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/src/vbox/vbox_driver.c b/src/vbox/vbox_driver.c
index 743a48813291954eb6e56a1f973eb2ac1a3848f1..f26827faf59f4fc8c36b4a528d81e97c286fc6d3 100644 (file)
--- a/src/vbox/vbox_driver.c
+++ b/src/vbox/vbox_driver.c
@@ -152,7 +152,7 @@ int vboxNetworkRegister(void)
     if (VBoxCGlueInit(&uVersion) == 0)
         networkDriver = vboxGetNetworkDriver(uVersion);
 
-    if (virRegisterNetworkDriver(networkDriver) < 0)
+    if (networkDriver && virRegisterNetworkDriver(networkDriver) < 0)
         return -1;
     return 0;
 }