[libvirt] [PATCH 8/8] qemu: Resolve Coverity FORWARD_NULL

[John Ferlan]

Coverity points out that qemuMonitorGetAllBlockStatsInfo could return a
-1 and thus not fill in 'stats' (leaving it NULL). Then the call to
qemuMonitorBlockStatsUpdateCapacity will dereference it.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_driver.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index a76858a..d173aa1 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -19633,8 +19633,9 @@ qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
         qemuDomainObjEnterMonitor(driver, dom);
         rc = qemuMonitorGetAllBlockStatsInfo(priv->mon, &stats,
                                              visitBacking);
-        ignore_value(qemuMonitorBlockStatsUpdateCapacity(priv->mon, stats,
-                                                         visitBacking));
+        if (rc >= 0)
+            ignore_value(qemuMonitorBlockStatsUpdateCapacity(priv->mon, stats,
+                                                             visitBacking));
         if (qemuDomainObjExitMonitor(driver, dom) < 0)
             goto cleanup;
 
-- 
2.1.0