builtin-log.c: guard config parser from value=NULL

format.subjectprefix configuration expects a string value.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-log.c b/builtin-log.c
index dcc9f817930a3caf8d434dfd54fe476501bcdda2..9458428a8b69077a4b17475d596144ce92e1da4e 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -219,7 +219,7 @@ static int git_log_config(const char *var, const char *value)
 {
        if (!strcmp(var, "format.subjectprefix")) {
                if (!value)
-                       die("format.subjectprefix without value");
+                       config_error_nonbool(var);
                fmt_patch_subject_prefix = xstrdup(value);
                return 0;
        }