credential-factory: Fix build with DEBUG_LEVEL < 1

Newer versions of clang complain here.

diff --git a/src/libstrongswan/credentials/credential_factory.c b/src/libstrongswan/credentials/credential_factory.c
index c46ca580254f2b59bc6ebc1f5c953a11d7f6ba0e..1fa34192d84afe723e08c5f3860de5026e6ae9ed 100644 (file)
--- a/src/libstrongswan/credentials/credential_factory.c
+++ b/src/libstrongswan/credentials/credential_factory.c
@@ -117,7 +117,7 @@ METHOD(credential_factory_t, create, void*,
        entry_t *entry;
        va_list args;
        void *construct = NULL;
-       int failures = 0;
+       int failures DBG_UNUSED = 0;
        uintptr_t level;
        enum_name_t *names DBG_UNUSED;