F-2971 - https://fenrir.wolfssl.com/finding/2971 - Add ForceZero on session auth in wolfTPM2_UnloadHandles before return

Author: aidangarske

src/tpm2_wrap.c

@@ -7036,6 +7036,7 @@ int wolfTPM2_UnloadHandles(WOLFTPM2_DEV* dev, word32 handleStart,
         /* ignore return code failures */
         (void)wolfTPM2_UnloadHandle(dev, &handle);
     }
+    TPM2_ForceZero(&handle, sizeof(handle));
     return rc;
 }