From: Roland Rosenfeld <user-32bbd224898f@xymon.invalid>
Date: Mon, 20 May 2024 13:52:34 +0200
Subject: commafy() returns its result.
 In contrast to uncommafy(), which rewrites its parameter.

--- a/lib/environ.c
+++ b/lib/environ.c
@@ -245,8 +245,7 @@ static void xymon_default_machine(void)
 	}
 
 	evar = (char *)malloc(9+strlen(machinebase));
-	sprintf(evar, "MACHINE=%s", machinebase);
-	commafy(evar);
+	sprintf(evar, "MACHINE=%s", commafy(machinebase));
 	dbgprintf("Setting %s\n", evar);
 	putenv(evar);
 }