Added a null-safe strdup variant

src/libstrongswan/settings.c

@@ -127,7 +127,7 @@ static section_t *section_create(char *name)
 {
 	section_t *this;
 	INIT(this,
-		.name = name ? strdup(name) : NULL,
+		.name = strdupnull(name),
 		.sections = linked_list_create(),
 		.kv = linked_list_create(),
 	);

src/libstrongswan/utils.h

@@ -71,6 +71,11 @@
  */
 #define strncaseeq(x,y,len) (strncasecmp(x, y, len) == 0)
 
+/**
+ * NULL-safe strdup variant
+ */
+#define strdupnull(x) ({ char *_x = x; _x ? strdup(_x) : NULL; })
+
 /**
  * Macro compares two binary blobs for equality
  */