Protect the peer_authenticated flag more

Add more protection to the flag preventing attacker
possibly to glitch using faulty certificate.
diff --git a/library/entropy.c b/library/entropy.c
index d1bde6a..9818a54 100644
--- a/library/entropy.c
+++ b/library/entropy.c
@@ -314,6 +314,7 @@
         {
             return( MBEDTLS_ERR_PLATFORM_FAULT_DETECTED );
         }
+
     }
 
     return( MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE );