Add missing newline at end of file

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/tests/src/psa_memory_poisoning_wrappers.c b/tests/src/psa_memory_poisoning_wrappers.c
index 89830a5..a53e875 100644
--- a/tests/src/psa_memory_poisoning_wrappers.c
+++ b/tests/src/psa_memory_poisoning_wrappers.c
@@ -50,4 +50,4 @@
 }
 
 #endif /* MBEDTLS_TEST_HOOKS && MBEDTLS_PSA_CRYPTO_C &&
-          MBEDTLS_TEST_MEMORY_CAN_POISON */
\ No newline at end of file
+          MBEDTLS_TEST_MEMORY_CAN_POISON */