[libvirt] [PATCH] conf: Plug memory leaks on virDomainDiskDefParseXML

[Alex Jia]

Detected by valgrind. Leaks are introduced in commit b22eaa7.

* src/conf/domain_conf.c (virDomainDiskDefParseXML): fix memory leaks.

How to reproduce?

% make && make -C tests check TESTS=qemuxml2argvtest
% cd tests && valgrind -v --leak-check=full ./qemuxml2argvtest

actual result:

==2143== 12 bytes in 2 blocks are definitely lost in loss record 74 of 179
==2143==    at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==2143==    by 0x39D90A67DD: xmlStrndup (xmlstring.c:45)
==2143==    by 0x4F5EC0: virDomainDiskDefParseXML (domain_conf.c:3438)
==2143==    by 0x502F00: virDomainDefParseXML (domain_conf.c:8304)
==2143==    by 0x505FE3: virDomainDefParseNode (domain_conf.c:9080)
==2143==    by 0x5069AE: virDomainDefParse (domain_conf.c:9030)
==2143==    by 0x41CBF4: testCompareXMLToArgvHelper (qemuxml2argvtest.c:105)
==2143==    by 0x41E5DD: virtTestRun (testutils.c:145)
==2143==    by 0x416FA3: mymain (qemuxml2argvtest.c:399)
==2143==    by 0x41DCB7: virtTestMain (testutils.c:700)
==2143==    by 0x39CF01ECDC: (below main) (libc-start.c:226)

Signed-off-by: Alex Jia <ajia at redhat.com>
---
 src/conf/domain_conf.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index cca757d..c6b97e1 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3893,6 +3893,7 @@ cleanup:
     VIR_FREE(rawio);
     VIR_FREE(target);
     VIR_FREE(source);
+    VIR_FREE(tray);
     while (nhosts > 0) {
         virDomainDiskHostDefFree(&hosts[nhosts - 1]);
         nhosts--;
-- 
1.7.1