cpdb: Print name of the key that was actually set

Print key of the `key` local variable, which is
the one used in the iteration and which gets passed
in the PPDContext::setValue call above, instead of
using `pKey` that was assigned further above but
is generally unrelated here.

Change-Id: Ifdb86b5848dc2d7f0027a3960f43914ea143c018
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/180082
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins

vcl/unx/generic/printer/cpdmgr.cxx

@@ -435,11 +435,11 @@ const PPDParser* CPDManager::createCPDParser(const OUString& rPrinter)
                     {
                         rContext.setValue(key, p1Value, true);
                         SAL_INFO("vcl.unx.print",
-                                 "key " << pKey->getKey() << " is set to " << *defit);
+                                 "key " << key->getKey() << " is set to " << *defit);
                     }
                     else
                         SAL_INFO("vcl.unx.print",
-                                 "key " << pKey->getKey() << " is defaulted to " << *defit);
+                                 "key " << key->getKey() << " is defaulted to " << *defit);
                 }
                 ++defit;
             }