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storage: Resolve Coverity FORWARD_NULL

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Coverity points out it's possible for one of the virCommand{Output|Error}*
API's to have not allocated 'output' and/or 'error' in which case the
strstr comparison will cause a NULL deref

Signed-off-by: John Ferlan <jferlan@redhat.com>
This commit is contained in:
John Ferlan 2015-05-13 06:24:50 -04:00
parent 6005bac45d
commit 2d0243f4d6
1 changed files with 2 additions and 2 deletions
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4
src/storage/storage_backend_disk.c
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@ -413,8 +413,8 @@ virStorageBackendDiskFindLabel(const char* device)
/* if parted succeeds we have a valid partition table */
ret = virCommandRun(cmd, NULL);
if (ret < 0) {
if (strstr(output, "unrecognised disk label") ||
strstr(error, "unrecognised disk label")) {
if ((output && strstr(output, "unrecognised disk label")) ||
(error && strstr(error, "unrecognised disk label"))) {
ret = 1;
}
}