ENH: Fix unitialized read in img_fol (we may need a smarter initialize than memset)

codec/j2k_to_image.c

@@ -517,6 +517,8 @@ int main(int argc, char **argv) {
 	/* set decoding parameters to default values */
 	opj_set_default_decoder_parameters(&parameters);
 
+	/* need to initialize img_fol since parameters will be read in parse_cmdline_decoder */
+	memset(&img_fol,0,sizeof(img_fol_t));
 
 	/* parse input and get user encoding parameters */
 	if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {