Minor formatting fixes;

lib/sexp_ops.c

@@ -210,7 +210,7 @@ sexp_t *copy_sexp(const sexp_t *s) {
 	  return NULL;
 	}
 
-  memcpy(s_new->val, s->val, sizeof(char)*s->val_used);
+        memcpy(s_new->val, s->val, sizeof(char)*s->val_used);
       }
     }
   } else {