open_posix_testsuite/conformace/interfaces: Fix.

Change the main() and main(argc, argv) to main(void).

This fixes a lot of warnings in the latter case.

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/8-1.c b/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/8-1.c
index db0d11b..d03dc76 100644
--- a/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/8-1.c
+++ b/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/8-1.c
@@ -21,7 +21,7 @@
 
 #define TNAME "aio_fsync/8-1.c"
 
-int main()
+int main(void)
 {
 	char tmpfname[256];
 #define BUF_SIZE 111