fixup! psa: Disallow use of invalid MAC contexts

Author: Patater

library/psa_crypto.c

@@ -2247,7 +2247,8 @@ psa_status_t psa_mac_sign_finish( psa_mac_operation_t *operation,
 {
     psa_status_t status;
 
-    if( operation->alg == 0) {
+    if( operation->alg == 0)
+    {
         return( PSA_ERROR_BAD_STATE );
     }
 
@@ -2289,7 +2290,8 @@ psa_status_t psa_mac_verify_finish( psa_mac_operation_t *operation,
     uint8_t actual_mac[PSA_MAC_MAX_SIZE];
     psa_status_t status;
 
-    if( operation->alg == 0) {
+    if( operation->alg == 0)
+    {
         return( PSA_ERROR_BAD_STATE );
     }