MT#55283 remove pointless struct

There are no extra fields here, so no point in having a struct

Change-Id: I00f38ecfb70cb5108f0822b6059c3d7189865c32

daemon/nftables.c

@@ -38,16 +38,12 @@ struct iterate_callbacks {
 
 	// scratch area for rule callbacks, set to zero for every rule
 	union {
-		struct {
-			bool match_immediate:1;
-		};
+		bool match_immediate;
 	} rule_scratch;
 
 	// scratch area for rule iterating
 	union {
-		struct {
-			GQueue handles;
-		};
+		GQueue handles;
 	} iterate_scratch;
 };