add new function pa_strna

diff --git a/src/pulsecore/core-util.h b/src/pulsecore/core-util.h
index 167d073586f8b52648d701739c9e583227a595ff..44b3af32aa37f56917613488e0e04f97c5c4bb59 100644 (file)
--- a/src/pulsecore/core-util.h
+++ b/src/pulsecore/core-util.h
@@ -97,6 +97,10 @@ static inline const char *pa_strempty(const char *x) {
     return x ? x : "";
 }
 
+static inline const char *pa_strna(const char *x) {
+    return x ? x : "n/a";
+}
+
 char *pa_split(const char *c, const char*delimiters, const char **state);
 char *pa_split_spaces(const char *c, const char **state);
 
@@ -198,7 +202,6 @@ pa_bool_t pa_in_system_mode(void);
 char *pa_machine_id(void);
 char *pa_uname_string(void);
 
-
 #ifdef HAVE_VALGRIND_MEMCHECK_H
 pa_bool_t pa_in_valgrind(void);
 #else