lib9: fix build for windows

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7311044

diff --git a/src/lib9/main.c b/src/lib9/main.c
index 85a73f9f29e2ce7217c586a0aafada9ba92ec42a..f1bde9c95f396d4bc2ce2a55ad49d86bcddd490c 100644 (file)
--- a/src/lib9/main.c
+++ b/src/lib9/main.c
@@ -30,7 +30,8 @@ THE SOFTWARE.
 #ifdef WIN32
 #include <windows.h>
 
-static void crashhandler() {
+static void crashhandler(int sig) {
+       USED(sig);
        fprint(2, "%s: internal fatal error.\n", argv0);
        exit(1);
 }