On 2012年12月01日 04:26, Daniel P. Berrange wrote:
From: "Daniel P. Berrange"<berrange@xxxxxxxxxx>
Common practice is to accept NULL for all "free" methods
Signed-off-by: Daniel P. Berrange<berrange@xxxxxxxxxx>
---
src/util/hostusb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/util/hostusb.c b/src/util/hostusb.c
index 24f925b..79b04eb 100644
--- a/src/util/hostusb.c
+++ b/src/util/hostusb.c
@@ -355,6 +355,9 @@ usbGetDevice(unsigned int bus,
void
usbFreeDevice(usbDevice *dev)
{
+ if (!dev)
+ return;
+
VIR_DEBUG("%s %s: freeing", dev->id, dev->name);
VIR_FREE(dev->path);
VIR_FREE(dev);
ACK
--
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