ext/sqlite3: make string pointers const

Author: MaxKellermann

ext/sqlite3/sqlite3.c

@@ -1235,7 +1235,7 @@ PHP_METHOD(SQLite3, openBlob)
 {
 	php_sqlite3_db_object *db_obj;
 	zval *object = ZEND_THIS;
-	char *table, *column, *dbname = "main", *mode = "rb";
+	const char *table, *column, *dbname = "main", *mode = "rb";
 	size_t table_len, column_len, dbname_len;
 	zend_long rowid, flags = SQLITE_OPEN_READONLY, sqlite_flags = 0;
 	sqlite3_blob *blob = NULL;
@@ -1335,7 +1335,7 @@ PHP_METHOD(SQLite3, backup)
 {
 	php_sqlite3_db_object *source_obj;
 	php_sqlite3_db_object *destination_obj;
-	char *source_dbname = "main", *destination_dbname = "main";
+	const char *source_dbname = "main", *destination_dbname = "main";
 	size_t source_dbname_length, destination_dbname_length;
 	zval *source_zval = ZEND_THIS;
 	zval *destination_zval;