colo-compare: fix the dangerous assignment

Cc: Peter Maydell <[email protected]>
Cc: Jason Wang <[email protected]>
Cc: Zhang Chen <[email protected]>
Cc: Li Zhijian <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Fixes: 8ec1440
Reported-by: Peter Maydell <[email protected]>
Reported-by: Paolo Bonzini <[email protected]>
Signed-off-by: Mao Zhongyi <[email protected]>
Reviewed-by: Darren Kenny <[email protected]>
Signed-off-by: Jason Wang <[email protected]>

net/colo-compare.c

@@ -179,7 +179,7 @@ static int packet_enqueue(CompareState *s, int mode, Connection **con)
                          "drop packet");
         }
     }
-    con = &conn;
+    *con = conn;
 
     return 0;
 }