# HG changeset patch
# User Matt Johnston <matt@ucc.asn.au>
# Date 1364899998 -28800
# Node ID 73b6e5d8801baf9cff58bee89c6236c174ba83f8
# Parent  70811267715c7c59c24e9419b1ee4fe781e8ea66
Fix segfault when /dev/urandom isn't writable

diff -r 70811267715c -r 73b6e5d8801b random.c
--- a/random.c	Mon Apr 01 22:26:55 2013 +0800
+++ b/random.c	Tue Apr 02 18:53:18 2013 +0800
@@ -157,6 +157,9 @@
 	/* This is opportunistic, don't worry about failure */
 	unsigned char buf[INIT_SEED_SIZE];
 	FILE *f = fopen(DROPBEAR_URANDOM_DEV, "w");
+    if (!f) {
+        return;
+    }
 	genrandom(buf, sizeof(buf));
 	fwrite(buf, sizeof(buf), 1, f);
 	fclose(f);