ss: prevent "Process" column from being printed unless requested

Commit 5883c6eba5 ("ss: show header for --processes/-p") added
"Process" to the list of columns printed by ss. However, the "Process"
header is now printed even if --processes/-p is not used.

This change aims to fix this by moving the COL_PROC column ID to the same
index as the corresponding column structure in the columns array, and
enabling it if --processes/-p is used.

Fixes: 5883c6eba5 ("ss: show header for --processes/-p")
Signed-off-by: Quentin Deslandes <qde@naccy.de>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

misc/ss.c

@@ -100,8 +100,8 @@ enum col_id {
 	COL_SERV,
 	COL_RADDR,
 	COL_RSERV,
-	COL_EXT,
 	COL_PROC,
+	COL_EXT,
 	COL_MAX
 };
 
@@ -5795,6 +5795,9 @@ int main(int argc, char *argv[])
 	if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
 		usage();
 
+	if (!show_processes)
+		columns[COL_PROC].disabled = 1;
+
 	if (!(current_filter.dbs & (current_filter.dbs - 1)))
 		columns[COL_NETID].disabled = 1;