[libvirt] [PATCH 5/6] conf: fix memleak in virDomainNetIpParseXML

[Zhang Bo]

use cleanup instead of error, so that the allocated strings could also get freed
when there's no error.

Signed-off-by: Zhang Bo <oscar.zhangbo at huawei.com>
---
 src/conf/domain_conf.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 41963cc..8350fe7 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -5129,6 +5129,7 @@ virDomainNetIpParseXML(xmlNodePtr node)
     char *familyStr = NULL;
     int family = AF_UNSPEC;
     char *address = NULL;
+    int ret = -1;
 
     if (!(prefixStr = virXMLPropString(node, "prefix")) ||
         (virStrToLong_ui(prefixStr, NULL, 10, &prefixValue) < 0)) {
@@ -5139,7 +5140,7 @@ virDomainNetIpParseXML(xmlNodePtr node)
     if (!(address = virXMLPropString(node, "address"))) {
         virReportError(VIR_ERR_INVALID_ARG, "%s",
                        _("Missing network address"));
-        goto error;
+        goto cleanup;
     }
 
     familyStr = virXMLPropString(node, "family");
@@ -5151,24 +5152,25 @@ virDomainNetIpParseXML(xmlNodePtr node)
         family = virSocketAddrNumericFamily(address);
 
     if (VIR_ALLOC(ip) < 0)
-        goto error;
+        goto cleanup;
 
     if (virSocketAddrParse(&ip->address, address, family) < 0) {
         virReportError(VIR_ERR_INVALID_ARG,
                        _("Failed to parse IP address: '%s'"),
                        address);
-        goto error;
+        goto cleanup;
     }
     ip->prefix = prefixValue;
 
-    return ip;
+    ret = 0;
 
- error:
+ cleanup:
     VIR_FREE(prefixStr);
     VIR_FREE(familyStr);
     VIR_FREE(address);
-    VIR_FREE(ip);
-    return NULL;
+    if (ret)
+        VIR_FREE(ip);
+    return ip;
 }
 
 static int
-- 
1.7.12.4