[libvirt] [PATCH] qemu: Fix crash when defining XML with bogus emulator

[Cole Robinson]

We weren't checking for failure of qemuCaps lookup
---
 src/qemu/qemu_domain.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 00c780d..97534c0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1247,7 +1247,9 @@ qemuDomainDefPostParse(virDomainDefPtr def,
         !(def->emulator = virDomainDefGetDefaultEmulator(def, caps)))
         return ret;
 
-    qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache, def->emulator);
+    if (!(qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache,
+                                            def->emulator)))
+        goto cleanup;
 
     if (qemuDomainDefAddDefaultDevices(def, qemuCaps) < 0)
         goto cleanup;
-- 
2.5.0