[PATCH] Fix memory leak in virDomainSnapshotDiskDefClear()

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While running domainsnapshotxml2xmltest, it was found that valgrind pointed out
the following memory leaks:

==32176== 42 (32 direct, 10 indirect) bytes in 1 blocks are definitely lost in loss record 42 of 66
==32176==    at 0x4A069EE: malloc (vg_replace_malloc.c:270)
==32176==    by 0x4A06B62: realloc (vg_replace_malloc.c:662)
==32176==    by 0x4C65A07: virReallocN (viralloc.c:243)
==32176==    by 0x4C65B2E: virExpandN (viralloc.c:292)
==32176==    by 0x4C65E30: virInsertElementsN (viralloc.c:434)
==32176==    by 0x4CD71F3: virDomainDiskSourceDefParse (domain_conf.c:5078)
==32176==    by 0x4CF6EF4: virDomainSnapshotDefParseNode (snapshot_conf.c:151)
==32176==    by 0x4CF7314: virDomainSnapshotDefParseString (snapshot_conf.c:410)
==32176==    by 0x41FB8D: testCompareXMLToXMLHelper (domainsnapshotxml2xmltest.c:100)
==32176==    by 0x420FD1: virtTestRun (testutils.c:199)
==32176==    by 0x41F859: mymain (domainsnapshotxml2xmltest.c:222)
==32176==    by 0x42174D: virtTestMain (testutils.c:782)
==32176==
==32176== 128 (96 direct, 32 indirect) bytes in 1 blocks are definitely lost in loss record 51 of 66
==32176==    at 0x4A06BE0: realloc (vg_replace_malloc.c:662)
==32176==    by 0x4C65A07: virReallocN (viralloc.c:243)
==32176==    by 0x4C65B2E: virExpandN (viralloc.c:292)
==32176==    by 0x4C65E30: virInsertElementsN (viralloc.c:434)
==32176==    by 0x4CD71F3: virDomainDiskSourceDefParse (domain_conf.c:5078)
==32176==    by 0x4CF6EF4: virDomainSnapshotDefParseNode (snapshot_conf.c:151)
==32176==    by 0x4CF7314: virDomainSnapshotDefParseString (snapshot_conf.c:410)
==32176==    by 0x41FB8D: testCompareXMLToXMLHelper (domainsnapshotxml2xmltest.c:100)
==32176==    by 0x420FD1: virtTestRun (testutils.c:199)
==32176==    by 0x41F859: mymain (domainsnapshotxml2xmltest.c:222)
==32176==    by 0x42174D: virtTestMain (testutils.c:782)
==32176==    by 0x3E6CE1ED1C: (below main) (libc-start.c:226)
==32176==

---
 src/conf/snapshot_conf.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c
index 12b0930..475525f 100644
--- a/src/conf/snapshot_conf.c
+++ b/src/conf/snapshot_conf.c
@@ -82,6 +82,7 @@ virDomainSnapshotDiskDefClear(virDomainSnapshotDiskDefPtr disk)
 {
     VIR_FREE(disk->name);
     VIR_FREE(disk->file);
+    virDomainDiskHostDefFree(disk->nhosts, disk->hosts);
 }
 
 void virDomainSnapshotDefFree(virDomainSnapshotDefPtr def)
-- 
1.7.1

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