virsh: don't lie about reconnection in vshReconnect

Since we (ab)use vshReconnect for the default URI connection, if it
fails it might print 'Failed to reconnect to the hypervisor' even if we
were never connected before.

This changes it to only mention reconnection on the first try after
getting disconnected.

tools/virsh.c

@@ -331,7 +331,10 @@ vshReconnect(vshControl *ctl)
                                    virConnectAuthPtrDefault,
                                    ctl->readonly ? VIR_CONNECT_RO : 0);
     if (!ctl->conn) {
-        vshError(ctl, "%s", _("Failed to reconnect to the hypervisor"));
+        if (disconnected)
+            vshError(ctl, "%s", _("Failed to reconnect to the hypervisor"));
+        else
+            vshError(ctl, "%s", _("failed to connect to the hypervisor"));
     } else {
         if (virConnectRegisterCloseCallback(ctl->conn, vshCatchDisconnect,
                                             NULL, NULL) < 0)