don't require master sends keys for signing key

Author: paul-szczepanek-arm

features/FEATURE_BLE/source/generic/GenericSecurityManager.cpp

@@ -177,14 +177,16 @@ ble_error_t GenericSecurityManager::acceptPairingRequest(connection_handle_t con
 
     KeyDistribution initiator_distribution = cb->get_initiator_key_distribution();
 
+    bool master_signing = initiator_distribution.get_signing();
+
     if (_master_sends_keys) {
         initiator_distribution &= _default_key_distribution;
     } else {
         initiator_distribution &= KeyDistribution(KeyDistribution::KEY_DISTRIBUTION_IDENTITY | KeyDistribution::KEY_DISTRIBUTION_LINK);
     }
 
     /* signing has to be offered and enabled on the link */
-    if (initiator_distribution.get_signing()) {
+    if (master_signing) {
         initiator_distribution.set_signing(
             cb->signing_override_default ? cb->signing_requested : _default_key_distribution.get_signing()
         );