png_destroy_struct   71 third_party/libpng/pngmem.c png_destroy_struct(png_voidp struct_ptr)
png_destroy_struct  402 third_party/libpng/pngmem.c png_destroy_struct(png_voidp struct_ptr)
png_destroy_struct  170 third_party/libpng/pngusr.h #define png_destroy_struct              wk_png_destroy_struct