Add const qualifier to fix compiler warnings

Author: vstinner

Modules/_ssl.c

@@ -1158,7 +1158,7 @@ _asn1obj2py(_sslmodulestate *state, const ASN1_OBJECT *name, int no_name)
 
 static PyObject *
 _create_tuple_for_attribute(_sslmodulestate *state,
-                            ASN1_OBJECT *name, ASN1_STRING *value)
+                            const ASN1_OBJECT *name, const ASN1_STRING *value)
 {
     Py_ssize_t buflen;
     PyObject *pyattr;
@@ -1187,16 +1187,16 @@ _create_tuple_for_attribute(_sslmodulestate *state,
 }
 
 static PyObject *
-_create_tuple_for_X509_NAME (_sslmodulestate *state, X509_NAME *xname)
+_create_tuple_for_X509_NAME (_sslmodulestate *state, const X509_NAME *xname)
 {
     PyObject *dn = NULL;    /* tuple which represents the "distinguished name" */
     PyObject *rdn = NULL;   /* tuple to hold a "relative distinguished name" */
     PyObject *rdnt;
     PyObject *attr = NULL;   /* tuple to hold an attribute */
     int entry_count = X509_NAME_entry_count(xname);
-    X509_NAME_ENTRY *entry;
-    ASN1_OBJECT *name;
-    ASN1_STRING *value;
+    const X509_NAME_ENTRY *entry;
+    const ASN1_OBJECT *name;
+    const ASN1_STRING *value;
     int index_counter;
     int rdn_level = -1;
     int retcode;

Modules/_ssl/cert.c

@@ -128,7 +128,8 @@ _ssl_Certificate_get_info_impl(PySSLCertificate *self)
 }
 
 static PyObject*
-_x509name_print(_sslmodulestate *state, X509_NAME *name, int indent, unsigned long flags)
+_x509name_print(_sslmodulestate *state, const X509_NAME *name,
+                int indent, unsigned long flags)
 {
     PyObject *res;
     BIO *biobuf;