Change functions to ANSI C.

apps/rsa.c

diff --git a/apps/rsa.c b/apps/rsa.c
index c8473d9..e09eeda 100644
--- a/apps/rsa.c
+++ b/apps/rsa.c
@@ -82,9 +82,7 @@
  * -modulus	- print the RSA key modulus
  */
 
-int MAIN(argc, argv)
-int argc;
-char **argv;
+int MAIN(int argc, char **argv)
 	{
 	int ret=1;
 	RSA *rsa=NULL;