Fix a merge error leftover

include/libvirt/virterror.h

@@ -70,7 +70,7 @@ typedef enum {
     VIR_FROM_SECRET,    /* Error from secret storage */
     VIR_FROM_CPU,       /* Error from CPU driver */
     VIR_FROM_XENAPI,    /* Error from XenAPI */
-    VIR_FROM_NWFILTER   /* Error from network filter driver */
+    VIR_FROM_NWFILTER,  /* Error from network filter driver */
     VIR_FROM_HOOK       /* Error from Synchronous hooks */
 } virErrorDomain;