[libvirt] [PATCH 4/9] conf: Need to check for glisten before accessing

[John Ferlan]

When formatting the graphics data for TYPE_SPICE, check if the glisten
is NULL before blindly referencing

Found by Coverity

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/conf/domain_conf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 82d9d1d..87a9a8d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -22150,6 +22150,12 @@ virDomainGraphicsDefFormat(virBufferPtr buf,
         break;
 
     case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
+        if (!glisten) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("missing listen element for spice graphics"));
+            return -1;
+        }
+
         switch (glisten->type) {
         case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_ADDRESS:
         case VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NETWORK:
-- 
2.5.5