connection.h in duckdb-0.5.0

- old
+ new

@@ -5,9 +5,10 @@
     duckdb_connection con;
 };
 
 typedef struct _rubyDuckDBConnection rubyDuckDBConnection;
 
+rubyDuckDBConnection *get_struct_connection(VALUE obj);
 void init_duckdb_connection(void);
 VALUE create_connection(VALUE oDuckDBDatabase);
 
 #endif