public: remove Q_vsprintf, replace by proper Q_vsnprintf proper calls

Fixes weird off by one error caused by glibc updates? I didn't tracked
what causes it exactly but replacing it seems to work. Anyway, we should
remove all 99999 hacks in libpublic.

engine/client/cl_main.c

@@ -2583,7 +2583,7 @@ void CL_ServerCommand( qboolean reliable, const char *fmt, ... )
 		return;
 
 	va_start( argptr, fmt );
-	Q_vsprintf( string, fmt, argptr );
+	Q_vsnprintf( string, sizeof( string ), fmt, argptr );
 	va_end( argptr );
 
 	if( reliable )

engine/common/host.c

@@ -733,7 +733,7 @@ void GAME_EXPORT Host_Error( const char *error, ... )
 	va_list		argptr;
 
 	va_start( argptr, error );
-	Q_vsprintf( hosterror1, error, argptr );
+	Q_vsnprintf( hosterror1, sizeof( hosterror1 ), error, argptr );
 	va_end( argptr );
 
 	CL_WriteMessageHistory (); // before Q_error call

engine/server/sv_cmds.c

@@ -34,7 +34,7 @@ void SV_ClientPrintf( sv_client_t *cl, const char *fmt, ... )
 		return;
 
 	va_start( argptr, fmt );
-	Q_vsprintf( string, fmt, argptr );
+	Q_vsnprintf( string, sizeof( string ), fmt, argptr );
 	va_end( argptr );
 
 	MSG_BeginServerCmd( &cl->netchan.message, svc_print );
@@ -56,7 +56,7 @@ void SV_BroadcastPrintf( sv_client_t *ignore, const char *fmt, ... )
 	int		i;
 
 	va_start( argptr, fmt );
-	Q_vsprintf( string, fmt, argptr );
+	Q_vsnprintf( string, sizeof( string ), fmt, argptr );
 	va_end( argptr );
 
 	if( sv.state == ss_active )
@@ -97,7 +97,7 @@ void SV_BroadcastCommand( const char *fmt, ... )
 		return;
 
 	va_start( argptr, fmt );
-	Q_vsprintf( string, fmt, argptr );
+	Q_vsnprintf( string, sizeof( string ), fmt, argptr );
 	va_end( argptr );
 
 	MSG_BeginServerCmd( &sv.reliable_datagram, svc_stufftext );

filesystem/filesystem.c

@@ -2064,7 +2064,7 @@ int FS_VPrintf( file_t *file, const char *format, va_list ap )
 	while( 1 )
 	{
 		tempbuff = (char *)Mem_Malloc( fs_mempool, buff_size );
-		len = Q_vsprintf( tempbuff, format, ap );
+		len = Q_vsnprintf( tempbuff, buff_size, format, ap );
 
 		if( len >= 0 && len < buff_size )
 			break;

public/crtlib.h

@@ -80,7 +80,6 @@ qboolean Q_stricmpext( const char *pattern, const char *text );
 qboolean Q_strnicmpext( const char *pattern, const char *text, size_t minimumlen );
 const byte *Q_memmem( const byte *haystack, size_t haystacklen, const byte *needle, size_t needlelen );
 const char *Q_timestamp( int format );
-#define Q_vsprintf( buffer, format, args ) Q_vsnprintf( buffer, 99999, format, args )
 int Q_vsnprintf( char *buffer, size_t buffersize, const char *format, va_list args );
 int Q_snprintf( char *buffer, size_t buffersize, const char *format, ... ) _format( 3 );
 int Q_sprintf( char *buffer, const char *format, ... ) _format( 2 );

ref/gl/gl_backend.c

@@ -55,7 +55,7 @@ void R_Speeds_Printf( const char *msg, ... )
 	char	text[2048];
 
 	va_start( argptr, msg );
-	Q_vsprintf( text, msg, argptr );
+	Q_vsnprintf( text, sizeof( text ), msg, argptr );
 	va_end( argptr );
 
 	Q_strncat( r_speeds_msg, text, sizeof( r_speeds_msg ));