[dnssec] move gnutls_datum_t cleanup macro to shared.h

dnssec/src/keys/pubkey.c

@@ -12,17 +12,6 @@
 #include "shared.h"
 #include "wire.h"
 
-// INTERNAL API (crypto dependent)
-
-// auto cleanup functions
-
-static void free_datum(gnutls_datum_t *ptr)
-{
-	gnutls_free(ptr->data);
-}
-
-#define _cleanup_datum_ _cleanup_(free_datum)
-
 // internal
 
 /**

dnssec/src/shared.h

@@ -4,6 +4,8 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+#include <gnutls/gnutls.h>
+
 #define _public_ __attribute__((visibility("default")))
 #define _hidden_ __attribute__((visibility("hidden")))
 
@@ -16,6 +18,8 @@
  */
 #define clear_struct(pointer) memset((pointer), '\0', sizeof(*(pointer)))
 
+/* -- cleanup macros ------------------------------------------------------- */
+
 #define _cleanup_(var) __attribute__((cleanup(var)))
 
 static inline void close_ptr(int *ptr)
@@ -36,6 +40,12 @@ static inline void free_ptr(void *ptr)
 	free(*(void **)ptr);
 }
 
+static inline void free_gnutls_datum_ptr(gnutls_datum_t *ptr)
+{
+	gnutls_free(ptr->data);
+}
+
 #define _cleanup_free_ _cleanup_(free_ptr)
 #define _cleanup_fclose_ _cleanup_(fclose_ptr)
 #define _cleanup_fclose_ _cleanup_(fclose_ptr)
+#define _cleanup_datum_ _cleanup_(free_gnutls_datum_ptr)