Do not free zero-length integer

diff --git a/src/libstrongswan/asn1/asn1.c b/src/libstrongswan/asn1/asn1.c
index d860ad9a2a1a3af8fffc7a01d8e66a23812d3f38..bbde452dd6ea4446767b33de9796443abacc10bf 100644 (file)
--- a/src/libstrongswan/asn1/asn1.c
+++ b/src/libstrongswan/asn1/asn1.c
@@ -781,10 +781,17 @@ chunk_t asn1_integer(const char *mode, chunk_t content)
        chunk_t object;
        size_t len;
        u_char *pos;
+       bool move;
+
 
        if (content.len == 0)
        {       /* make sure 0 is encoded properly */
                content = chunk_from_chars(0x00);
+               move = FALSE;
+       }
+       else
+       {
+               move = (*mode == 'm');
        }
 
        /* ASN.1 integers must be positive numbers in two's complement */
@@ -794,11 +801,9 @@ chunk_t asn1_integer(const char *mode, chunk_t content)
        {
                *pos++ = 0x00;
        }
-       if (len)
-       {
-               memcpy(pos, content.ptr, content.len);
-       }
-       if (*mode == 'm')
+       memcpy(pos, content.ptr, content.len);
+
+       if (move)
        {
                free(content.ptr);
        }