Man page - fcvaluedestroy(3)
Packages contains this manual
Manual
FcValueDestroy
NAMESYNOPSIS
DESCRIPTION
NAME
FcValueDestroy - Free a value
SYNOPSIS
#include <fontconfig/fontconfig.h>
void FcValueDestroy (FcValue v );
DESCRIPTION
Frees any memory referenced by v . Values of type FcTypeString, FcTypeMatrix and FcTypeCharSet reference memory, the other types do not.