qemu: domain: Add missing newline to last element in status XML formatter

Commit f9758109 did not put a newline after the element it added.

src/qemu/qemu_domain.c

@@ -1886,7 +1886,7 @@ qemuDomainObjPrivateXMLFormat(virBufferPtr buf,
     virCPUDefFormatBufFull(buf, priv->origCPU, NULL, false);
 
     if (priv->chardevStdioLogd)
-        virBufferAddLit(buf, "<chardevStdioLogd/>");
+        virBufferAddLit(buf, "<chardevStdioLogd/>\n");
 
     return 0;
 }