Add missing { for qemudDomainInterfaceStats

Add missing open curly brace between function declaration of non-linux
variant of qemudDomainInterfaceStats() and its body.

Signed-off-by: Philipp Hahn <hahn@univention.de>

src/qemu/qemu_driver.c

@@ -5132,6 +5132,7 @@ static int
 qemudDomainInterfaceStats (virDomainPtr dom,
                            const char *path ATTRIBUTE_UNUSED,
                            struct _virDomainInterfaceStats *stats ATTRIBUTE_UNUSED)
+{
     qemuReportError(VIR_ERR_NO_SUPPORT,
                     "%s", __FUNCTION__);
     return -1;