tree-wide: formatting tweaks reported by Coccinelle

src/home/homework.c

@@ -1038,10 +1038,9 @@ static int home_remove(UserRecord *h) {
 
         if (deleted)
                 log_info("Everything completed.");
-        else {
-                log_notice("Nothing to remove.");
-                return -EALREADY;
-        }
+        else
+                return log_notice_errno(SYNTHETIC_ERRNO(EALREADY),
+                                        "Nothing to remove.");
 
         return 0;
 }

src/libsystemd-network/sd-dhcp-lease.c

@@ -141,8 +141,8 @@ int sd_dhcp_lease_get_servers(
                 return (int) lease->smtp_server_size;
 
         default:
-                log_debug("Uknown DHCP lease info item %d.", what);
-                return -ENXIO;
+                return log_debug_errno(SYNTHETIC_ERRNO(ENXIO),
+                                       "Uknown DHCP lease info item %d.", what);
         }
 }
 

src/libsystemd-network/sd-dhcp-server.c

@@ -1162,8 +1162,8 @@ int sd_dhcp_server_set_servers(
                 break;
 
         default:
-                log_debug("Uknown DHCP lease info item %d.", what);
-                return -ENXIO;
+                return log_debug_errno(SYNTHETIC_ERRNO(ENXIO),
+                                       "Uknown DHCP lease info item %d.", what);
         }
 
         if (*n_a == n_addresses &&

src/test/test-install-root.c

@@ -1058,7 +1058,8 @@ static void verify_one(
         r = unit_file_verify_alias(i, alias, &alias2);
         log_info_errno(r, "alias %s ← %s: %d/%m (expected %d)%s%s%s",
                        i->name, alias, r, expected,
-                       alias2 ? " [" : "", alias2 ?: "", alias2 ? "]" : "");
+                       alias2 ? " [" : "", strempty(alias2),
+                       alias2 ? "]" : "");
         assert(r == expected);
 
         /* This is is test for "instance propagation". This propagation matters mostly for WantedBy= and