Fix various segfaults and heap trashes. Thanks to Andrew Mobbs.

[u/mdw/putty] / noise.c

diff --git a/noise.c b/noise.c
index cf9bba5..3ff00be 100644 (file)
--- a/noise.c
+++ b/noise.c
@@ -73,7 +73,7 @@ void noise_get_heavy(void (*func) (void *, int)) {
                       FILE_SHARE_READ | FILE_SHARE_WRITE,
                       NULL, OPEN_EXISTING, 0, NULL);
 
-    if (seedf) {
+    if (seedf != INVALID_HANDLE_VALUE) {
        while (1) {
            char buf[1024];
            DWORD len;
@@ -96,7 +96,7 @@ void random_save_seed(void) {
     seedf = CreateFile(seedpath, GENERIC_WRITE, 0,
                       NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
 
-    if (seedf) {
+    if (seedf != INVALID_HANDLE_VALUE) {
        int len;
        DWORD lenwritten;
        void *data;