Fix: define LOG_REFERENCES_AVAILABLE in header

Must be defined in the header to apply to applications using this library, when build in release mode.

Author: Kraemii

base/logging.c

@@ -48,12 +48,6 @@
  */
 #define G_LOG_DOMAIN "libgvm base"
 
-/**
- * @brief for backward compatibility
- *
- */
-#define LOG_REFERENCES_AVAILABLE
-
 /**
  * @struct gvm_logging_t
  * @brief Logging stores the parameters loaded from a log configuration
@@ -581,7 +575,7 @@ gvm_log_func (const char *log_domain, GLogLevelFlags log_level,
       /* If the current char is a % and the next one is a p, get the pid. */
       if ((*tmp == '%') && (*(tmp + 1) == 'p'))
         {
-          if (reference != NULL)
+          if (reference)
             {
               prepend_tmp =
                 g_strdup_printf ("%s%d%s%s", prepend_buf, (int) getpid (),

base/logging.h

@@ -27,6 +27,12 @@
 
 #include <glib.h> /* for GSList, gchar, GLogLevelFlags, gpointer */
 
+/**
+ * @brief for backward compatibility
+ *
+ */
+#define LOG_REFERENCES_AVAILABLE
+
 GSList *
 load_log_configuration (gchar *);