Migrate leak related structs to leak package

cmd/leak.go

@@ -15,13 +15,12 @@ var leakOpts = struct {
 // leakCmd represents the leak command
 var leakCmd = &cobra.Command{
 	Use:   "leak [flags] <dump-A> <dump-B> <dump-C>",
-	Short: "Find objects which are likely leaked memory.",
+	Short: "Find objects which are likely leaked memory",
 	Long: `Find objects which are likely leaked memory.
 
 Compares the objects in three different dumps (A, B, C), to identify which
 objects are present in both B and C, and not present in A.`,
 
-	// Args: cobra.ExactArgs(3),
 	Run: func(cmd *cobra.Command, args []string) {
 		if len(args) != 3 {
 			usage_er(cmd, fmt.Sprintf("requires 3 args, received %d", len(args)))