Fix the assignement of the bcc_size.

Change-Id: Iaf3ead346a450defc508b59f50e65dba3102beb5
Reviewed-on: https://pigweed-review.googlesource.com/c/open-dice/+/89500
Reviewed-by: Andrew Scull <ascull@google.com>
Commit-Queue: Hasini Gunasinghe <hasinitg@google.com>
diff --git a/src/android/bcc.c b/src/android/bcc.c
index 1990e5c..8855f71 100644
--- a/src/android/bcc.c
+++ b/src/android/bcc.c
@@ -181,7 +181,7 @@
   if (result != kDiceResultOk) {
     return result;
   }
-  bcc_size += encoded_size_used + encoded_pub_key_size;
+  *bcc_size += encoded_size_used + encoded_pub_key_size;
 
 out:
   DiceClearMemory(context, sizeof(current_cdi_private_key_seed),