pidgin/pidgin

Don't allow adding a buddy to prpls that don't have an add_buddy callback. Fixes #4061
#ifndef _SYS_UTSNAME_H
#define _SYS_UTSNAME_H
#ifdef __cplusplus
extern "C" {
#endif
struct utsname
{
char sysname[20];
char nodename[20];
char release[20];
char version[20];
char machine[20];
};
int jabber_win32_uname (struct utsname *);
#define uname(utsname) jabber_win32_uname(utsname)
#ifdef __cplusplus
}
#endif
#endif