systemd: Fix busctl crash on aarch64 when setting output table format

The enum used for column names is integer type while table_set_display() is parsing
arguments on size_t alignment which may result in assert in table_set_display() if
the size between types missmatch. This patch cast the enums to size_t.
It also fixes all other occurences for table_set_display() and
table_set_sort().

src/busctl/busctl.c

@@ -207,7 +207,7 @@ static int list_bus_names(int argc, char **argv, void *userdata) {
         if (r < 0)
                 return log_error_errno(r, "Failed to set empty string: %m");
 
-        r = table_set_sort(table, COLUMN_NAME, (size_t) -1);
+        r = table_set_sort(table, (size_t) COLUMN_NAME, (size_t) -1);
         if (r < 0)
                 return log_error_errno(r, "Failed to set sort column: %m");