Protect asio exception hotfix (#4527) (#4530)

* Refs #20599: Handle error code before function call

Signed-off-by: cferreiragonz <carlosferreira@eprosima.com>

* Apply suggestion

Co-authored-by: Miguel Company <miguelcompany@eprosima.com>

---------

Signed-off-by: cferreiragonz <carlosferreira@eprosima.com>
Co-authored-by: Miguel Company <miguelcompany@eprosima.com>
(cherry picked from commit 08193d5)

Co-authored-by: Carlos Ferreira González <carlosferreira@eprosima.com>

src/cpp/rtps/transport/TCPTransportInterface.cpp

@@ -262,11 +262,15 @@ Locator TCPTransportInterface::remote_endpoint_to_locator(
 {
     Locator locator;
     asio::error_code ec;
-    endpoint_to_locator(channel->remote_endpoint(ec), locator);
+    auto endpoint = channel->remote_endpoint(ec);
     if (ec)
     {
         LOCATOR_INVALID(locator);
     }
+    else
+    {
+        endpoint_to_locator(endpoint, locator);
+    }
     return locator;
 }
 
@@ -275,11 +279,15 @@ Locator TCPTransportInterface::local_endpoint_to_locator(
 {
     Locator locator;
     asio::error_code ec;
-    endpoint_to_locator(channel->local_endpoint(ec), locator);
+    auto endpoint = channel->local_endpoint(ec);
     if (ec)
     {
         LOCATOR_INVALID(locator);
     }
+    else
+    {
+        endpoint_to_locator(endpoint, locator);
+    }
     return locator;
 }