[CLEANUP] add a few "const char *" where appropriate
As suggested by Markus Elfring, a few "const char *" have replaced
some "char *" declarations where a function is not expected to
modify a value. It does not change the code but it helps detecting
coding errors.
diff --git a/include/proto/proto_http.h b/include/proto/proto_http.h
index 205b0ee..0005bf7 100644
--- a/include/proto/proto_http.h
+++ b/include/proto/proto_http.h
@@ -36,7 +36,7 @@
void client_retnclose(struct session *s, int len, const char *msg);
void client_return(struct session *s, int len, const char *msg);
void srv_close_with_err(struct session *t, int err, int finst,
- int status, int msglen, char *msg);
+ int status, int msglen, const char *msg);
int produce_content(struct session *s);