simple-shm: Don't use ret variable in main() uninitialized
diff --git a/clients/simple-shm.c b/clients/simple-shm.c
index d03bed6..a09ec91 100644
--- a/clients/simple-shm.c
+++ b/clients/simple-shm.c
@@ -328,7 +328,7 @@
 	struct sigaction sigint;
 	struct display *display;
 	struct window *window;
-	int ret;
+	int ret = 0;
 
 	display = create_display();
 	window = create_window(display, 250, 250);