submission-login: Fix compiling error with some older compilers

diff --git a/src/submission-login/submission-proxy.c b/src/submission-login/submission-proxy.c
index 778b8146375c0b63554861f5e7e2fabdf2f15fe9..c1709fba65814b2b4e56d19a64c8572e53744ecd 100644 (file)
--- a/src/submission-login/submission-proxy.c
+++ b/src/submission-login/submission-proxy.c
@@ -80,7 +80,7 @@ proxy_send_xclient_more_data(struct submission_client *client,
                             const char *field, const unsigned char *value,
                             size_t value_size)
 {
-       static const size_t cmd_len = strlen("XCLIENT");
+       const size_t cmd_len = strlen("XCLIENT");
        size_t prev_len = str_len(buf);
 
        str_append_c(buf, ' ');