Added check for allocation failures in EAPOL

Author: Mika Tervonen

source/Security/protocols/eap_tls_sec_prot/supp_eap_tls_sec_prot.c

@@ -244,6 +244,9 @@ static int8_t supp_eap_tls_sec_prot_message_send(sec_prot_t *prot, uint8_t eap_c
             const uint8_t identity_size = sizeof(identity) - 1;
             if (data->tls_send.total_len != identity_size) {
                 eap_tls_sec_prot_lib_message_allocate(&data->tls_send, TLS_HEAD_LEN, identity_size);
+                if (!data->tls_send.data) {
+                    return -1;
+                }
                 memcpy(data->tls_send.data + TLS_HEAD_LEN, identity, identity_size);
             }
             flags = 0xff;

source/Security/protocols/tls_sec_prot/tls_sec_prot.c

@@ -496,6 +496,9 @@ static int16_t tls_sec_prot_tls_send(void *handle, const void *buf, size_t len)
     if (!data->tls_send.data) {
         eap_tls_sec_prot_lib_message_allocate(&data->tls_send, prot->header_size, TLS_SEC_PROT_BUFFER_SIZE);
     }
+    if (!data->tls_send.data) {
+        return -1;
+    }
 
     memcpy(data->tls_send.data + prot->header_size + data->tls_send.handled_len, buf, len);
     data->tls_send.handled_len += len;