Add a global return_success() method implementation

src/libstrongswan/utils/utils.c

@@ -386,6 +386,14 @@ status_t return_failed()
 	return FAILED;
 }
 
+/**
+ * returns SUCCESS
+ */
+status_t return_success()
+{
+	return SUCCESS;
+}
+
 /**
  * nop operation
  */

src/libstrongswan/utils/utils.h

@@ -495,6 +495,11 @@ bool return_false();
  */
 status_t return_failed();
 
+/**
+ * returns SUCCESS
+ */
+status_t return_success();
+
 /**
  * Write a 16-bit host order value in network order to an unaligned address.
  *