config.c: guard config parser from value=NULL

user.{name,email}, core.{pager,editor,excludesfile,whitespace} and
i18n.{commit,logoutput}encoding all expect string values.

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

diff --git a/config.c b/config.c
index 03c94a27043681678ad6dd08df6de5c6b7cb4dc7..3f4d3b1602cf4764184fe7df70a232e71a5058ec 100644 (file)
--- a/config.c
+++ b/config.c
@@ -408,21 +408,29 @@ int git_default_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "user.name")) {
+               if (!value)
+                       return config_error_nonbool(var);
                strlcpy(git_default_name, value, sizeof(git_default_name));
                return 0;
        }
 
        if (!strcmp(var, "user.email")) {
+               if (!value)
+                       return config_error_nonbool(var);
                strlcpy(git_default_email, value, sizeof(git_default_email));
                return 0;
        }
 
        if (!strcmp(var, "i18n.commitencoding")) {
+               if (!value)
+                       return config_error_nonbool(var);
                git_commit_encoding = xstrdup(value);
                return 0;
        }
 
        if (!strcmp(var, "i18n.logoutputencoding")) {
+               if (!value)
+                       return config_error_nonbool(var);
                git_log_output_encoding = xstrdup(value);
                return 0;
        }
@@ -434,23 +442,29 @@ int git_default_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "core.pager")) {
+               if (!value)
+                       return config_error_nonbool(var);
                pager_program = xstrdup(value);
                return 0;
        }
 
        if (!strcmp(var, "core.editor")) {
+               if (!value)
+                       return config_error_nonbool(var);
                editor_program = xstrdup(value);
                return 0;
        }
 
        if (!strcmp(var, "core.excludesfile")) {
                if (!value)
-                       die("core.excludesfile without value");
+                       return config_error_nonbool(var);
                excludes_file = xstrdup(value);
                return 0;
        }
 
        if (!strcmp(var, "core.whitespace")) {
+               if (!value)
+                       return config_error_nonbool(var);
                whitespace_rule_cfg = parse_whitespace_rule(value);
                return 0;
        }