minor #15904 [HttpClient] Clarify what error handling is for http-client (Seldaek)

This PR was merged into the 4.4 branch.

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[HttpClient] Clarify what error handling is for http-client

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c4fb582 Clarify what error handling is for http-client

Author: javiereguiluz

http_client.rst

@@ -965,8 +965,9 @@ responses in an array::
 This behavior provided at destruction-time is part of the fail-safe design of the
 component. No errors will be unnoticed: if you don't write the code to handle
 errors, exceptions will notify you when needed. On the other hand, if you write
-the error-handling code, you will opt-out from these fallback mechanisms as the
-destructor won't have anything remaining to do.
+the error-handling code (by calling ``$response->getStatusCode()``), you will
+opt-out from these fallback mechanisms as the destructor won't have anything 
+remaining to do.
 
 There are three types of exceptions: