fix a tiny comment niggle

Signed-off-by: Kris Van Hees <kris.van.hees@oracle.com>
Suggested-by: Nick Alcock <nick.alcock@oracle.com>
Reviewed-by: Eugene Loh <eugene.loh@oracle.com>

libdtrace/dt_open.c

@@ -770,12 +770,7 @@ dt_vopen(int version, int flags, int *errp,
 	for (i = 0; i < DTRACEOPT_MAX; i++)
 		dtp->dt_options[i] = DTRACEOPT_UNSET;
 
-	/* FIXME: the default value of strsize must be set.
-	 * In legacy DTrace, the value was read from the kernel
-	 * in dt_options_load().  When string handling is done,
-	 * we will introduce a real solution suitable for this
-	 * version.  For now, just set it here.
-	 */
+	/* Set the default maximum string size. */
 	dtp->dt_options[DTRACEOPT_STRSIZE] = 256;
 
 	/* Set the default dynamic variable space size. */