refactor skip_prefix to return a boolean

diff --git a/credential.c b/credential.c
index e54753c75d1c2abf7916f1aa7075d4ada3cfc61f..4d79d320f89e956aa9233a170120f05b2473ca59 100644 (file)
--- a/credential.c
+++ b/credential.c
@@ -40,8 +40,7 @@ static int credential_config_callback(const char *var, const char *value,
        struct credential *c = data;
        const char *key, *dot;
 
-       key = skip_prefix(var, "credential.");
-       if (!key)
+       if (!skip_prefix(var, "credential.", &key))
                return 0;
 
        if (!value)