cgtop: use SWAP_TWO() macro

diff --git a/src/cgtop/cgtop.c b/src/cgtop/cgtop.c
index 6a821ff38e73d2da24459e86a860714b4a97e311..5abfab03de5416511e8c47563c61a15ec5e1d73f 100644 (file)
--- a/src/cgtop/cgtop.c
+++ b/src/cgtop/cgtop.c
@@ -943,7 +943,6 @@ static int run(int argc, char *argv[]) {
                 arg_iterations = on_tty() ? 0 : 1;
 
         while (!quit) {
-                Hashmap *c;
                 usec_t t;
                 char key;
                 char h[FORMAT_TIMESPAN_MAX];
@@ -957,10 +956,7 @@ static int run(int argc, char *argv[]) {
                                 return log_error_errno(r, "Failed to refresh: %m");
 
                         hashmap_clear(b);
-
-                        c = a;
-                        a = b;
-                        b = c;
+                        SWAP_TWO(a, b);
 
                         last_refresh = t;
                         immediate_refresh = false;