test/send-email: --[no-]xmailer tests

diff --git a/advice.c b/advice.c
index c50ebdf5fe82d88b901ca26668806c94e03fbb37..9b420331926c6bf1aa371f973d6a96886f419b06 100644 (file)
--- a/advice.c
+++ b/advice.c
@@ -61,9 +61,12 @@ void advise(const char *advice, ...)
 
 int git_default_advice_config(const char *var, const char *value)
 {
-       const char *k = skip_prefix(var, "advice.");
+       const char *k;
        int i;
 
+       if (!skip_prefix(var, "advice.", &k))
+               return 0;
+
        for (i = 0; i < ARRAY_SIZE(advice_config); i++) {
                if (strcmp(k, advice_config[i].name))
                        continue;