Simplify the Xen domain autostart driver method

Unconditionally call into the XenD or XM drivers for autostart
handling, since they are guaranteed to be open

src/xen/xen_driver.c

@@ -1475,16 +1475,10 @@ xenUnifiedDomainGetAutostart(virDomainPtr dom, int *autostart)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
 
-    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
-        if (priv->opened[XEN_UNIFIED_XM_OFFSET])
+    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
         return xenXMDomainGetAutostart(dom, autostart);
-    } else {
-        if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+    else
         return xenDaemonDomainGetAutostart(dom, autostart);
-    }
-
-    virReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
-    return -1;
 }
 
 static int
@@ -1492,16 +1486,10 @@ xenUnifiedDomainSetAutostart(virDomainPtr dom, int autostart)
 {
     xenUnifiedPrivatePtr priv = dom->conn->privateData;
 
-    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4) {
-        if (priv->opened[XEN_UNIFIED_XM_OFFSET])
+    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
         return xenXMDomainSetAutostart(dom, autostart);
-    } else {
-        if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+    else
         return xenDaemonDomainSetAutostart(dom, autostart);
-    }
-
-    virReportError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
-    return -1;
 }
 
 static char *

src/xen/xend_internal.c

@@ -2540,13 +2540,6 @@ xenDaemonDomainGetAutostart(virDomainPtr domain, int *autostart)
 {
     struct sexpr *root;
     const char *tmp;
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
-
-    /* xm_internal.c (the support for defined domains from /etc/xen
-     * config files used by old Xen) will handle this.
-     */
-    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-        return -1;
 
     root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
     if (root == NULL) {
@@ -2573,13 +2566,6 @@ xenDaemonDomainSetAutostart(virDomainPtr domain, int autostart)
     virBuffer buffer = VIR_BUFFER_INITIALIZER;
     char *content = NULL;
     int ret = -1;
-    xenUnifiedPrivatePtr priv = domain->conn->privateData;
-
-    /* xm_internal.c (the support for defined domains from /etc/xen
-     * config files used by old Xen) will handle this.
-     */
-    if (priv->xendConfigVersion < XEND_CONFIG_VERSION_3_0_4)
-        return -1;
 
     root = sexpr_get(domain->conn, "/xend/domain/%s?detail=1", domain->name);
     if (root == NULL) {