CCAN: update.

Trivial updae.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/README

@@ -1,3 +1,3 @@
 CCAN imported from http://ccodearchive.net.
 
-CCAN version: init-2039-g396f2fc
+CCAN version: init-2049-gc2966d1

ccan/ccan/short_types/test/run-endian.c

@@ -4,7 +4,7 @@
 #include <stdlib.h>
 #include <err.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	plan_tests(6);
 

ccan/ccan/short_types/test/run.c

@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include <err.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	plan_tests(16);