pci: avoid invalid free, init path to NULL

This bug was introduce by commit 57162db8, and it will cause libvirtd crashed.

diff --git a/src/util/pci.c b/src/util/pci.c
index 6ed96f4fd27efe5ca70f005f865f208a96ae3d37..a7b8caaa3bb2ba987eea8874c37e37ab7db8af4c 100644 (file)
--- a/src/util/pci.c
+++ b/src/util/pci.c
@@ -1180,7 +1180,7 @@ pciWaitForDeviceCleanup(pciDevice *dev, const char *matcher)
 static char *
 pciReadDeviceID(pciDevice *dev, const char *id_name)
 {
-    char *path;
+    char *path = NULL;
     char *id_str;
 
     if (pciDeviceFile(&path, dev->name, id_name) < 0) {