it isn't strictly necessary to use it after a perform

docs/libcurl/curl_easy_getinfo.3

@@ -15,9 +15,9 @@ Request internal information from the curl session with this function.  The
 third argument \fBMUST\fP be a pointer to a long, a pointer to a char *, a
 pointer to a struct curl_slist * or a pointer to a double (as this
 documentation describes further down).  The data pointed-to will be filled in
-accordingly and can be relied upon only if the function returns CURLE_OK.
-This function is intended to get used AFTER a performed transfer, all results
-from this function are undefined until the transfer is completed.
+accordingly and can be relied upon only if the function returns CURLE_OK.  Use
+this function AFTER a performed transfer if you want to get transfer- oriented
+data.
 
 You should not free the memory returned by this function unless it is
 explictly mentioned below.