Fix for strict prototypes error: declarations are fine,
definitions are missing void
https://bugs.gentoo.org/949835
--- a/netatop.c	2024-06-01 15:19:08.000000000 +0400
+++ b/netatop.c	2025-02-16 15:48:07.094848633 +0400
@@ -1053,7 +1053,7 @@
 ** can be found at the head
 */
 static void
-gctaskexit()
+gctaskexit(void)
 {
 	unsigned long	flags;
 	struct taskinfo	*tip;
@@ -1087,7 +1087,7 @@
 ** cleanup sockinfo structures that are connected to finished processes
 */
 static void
-gcsockinfo()
+gcsockinfo(void)
 {
 	int		i;
 	struct sockinfo	*sip, *sipsave;
@@ -1300,7 +1300,7 @@
 ** remove taskinfo structures of finished tasks from hash list
 */
 static void
-gctaskinfo()
+gctaskinfo(void)
 {
 	int		i;
 	struct taskinfo	*tip, *tipsave;
@@ -1376,7 +1376,7 @@
 ** remove all sockinfo structs
 */
 static void
-wipesockinfo()
+wipesockinfo(void)
 {
 	struct sockinfo	*sip, *sipsave;
 	int 		i;
@@ -1404,7 +1404,7 @@
 ** remove all taskinfo structs from hash list
 */
 static void
-wipetaskinfo()
+wipetaskinfo(void)
 {
 	struct taskinfo	*tip, *tipsave;
 	int 		i;
@@ -1432,7 +1432,7 @@
 ** remove all taskinfo structs from exit list
 */
 static void
-wipetaskexit()
+wipetaskexit(void)
 {
 	gctaskexit();
 }
@@ -1768,7 +1768,7 @@
 ** called when module loaded
 */
 int
-init_module()
+init_module(void)
 {
 	int i;
 
@@ -1869,7 +1869,7 @@
 ** called when module unloaded
 */
 void
-cleanup_module()
+cleanup_module(void)
 {
 	/*
  	** tell kernel daemon to stop