Fix incorrect sizeof() on a pointer in MD5Final().

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Merged revisions 359059 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 359060 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@359061 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/md5.c

@@ -157,7 +157,7 @@ void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
 	MD5Transform(ctx->buf, (uint32_t *) ctx->in);
 	byteReverse((unsigned char *) ctx->buf, 4);
 	memcpy(digest, ctx->buf, 16);
-	memset(ctx, 0, sizeof(ctx));	/* In case it's sensitive */
+	memset(ctx, 0, sizeof(*ctx));	/* In case it's sensitive */
 }
 
 #ifndef ASM_MD5