libcupsfilters: Let pdftopdf() not send NULL to log function

The variable holding the value of FINAL_CONTENT_TYPE is NULL when the
environment variable is not set. At one place the variable value gets
logged using the log function. Do not send NULL here, to avoid a crash
of the log function.

diff --git a/cupsfilters/pdftopdf/pdftopdf.cc b/cupsfilters/pdftopdf/pdftopdf.cc
index 2642936b078050c622f8e3cbbb3da4ccc32a34b2..9024b6a4f1c24ec3a1ffa888ae3990138a24e5e4 100644 (file)
--- a/cupsfilters/pdftopdf/pdftopdf.cc
+++ b/cupsfilters/pdftopdf/pdftopdf.cc
@@ -867,7 +867,8 @@ bool checkFeature(const char *feature, int num_options, cups_option_t *options)
                                     "%s => pdftopdf will %slog pages in "
                                     "page_log.",
                                     (lastfilter ? lastfilter : "None"),
-                                    final_content_type,
+                                    (final_content_type ? final_content_type :
+                                     "(not supplied)"),
                                     (param.page_logging == 0 ? "not " : ""));
     }
   }