Sebastian Kuschel reports that pfd_closing can be called for a socket

[u/mdw/putty] / sshcrcda.c

diff --git a/sshcrcda.c b/sshcrcda.c
index 7fb5767..8d77cbb 100644 (file)
--- a/sshcrcda.c
+++ b/sshcrcda.c
@@ -42,12 +42,6 @@ typedef unsigned short uint16;
 
 #define HASH_MINBLOCKS (7*SSH_BLOCKSIZE)
 
-#define GET_32BIT_MSB_FIRST(cp) \
-  (((unsigned long)(unsigned char)(cp)[0] << 24) | \
-  ((unsigned long)(unsigned char)(cp)[1] << 16) | \
-  ((unsigned long)(unsigned char)(cp)[2] << 8) | \
-  ((unsigned long)(unsigned char)(cp)[3]))
-
 /* Hash function (Input keys are cipher results) */
 #define HASH(x)                GET_32BIT_MSB_FIRST(x)
 
@@ -71,7 +65,12 @@ void *crcda_make_context(void)
 
 void crcda_free_context(void *handle)
 {
-    sfree(handle);
+    struct crcda_ctx *ctx = (struct crcda_ctx *)handle;
+    if (ctx) {
+       sfree(ctx->h);
+       ctx->h = NULL;
+       sfree(ctx);
+    }
 }
 
 static void crc_update(uint32 *a, void *b)