error checking

tools/fimg2text.c

@@ -35,7 +35,6 @@ else {
 fp = stdout;					/* XXX */
 for (y=0; y<src->height; y+=steps) {
 	for (x=0; x<src->width; x+=steps) {
-
 		fimg_get_rgb(src, x, y, rgb);
 		fprintf(fp, "%d %d ", x, y);
 		fprintf(fp, "%f %f %f\n", rgb[0], rgb[1], rgb[2]);
@@ -120,7 +119,9 @@ if (norm > 0.0) {
 	}
 
 foo = export_as_machinable(&fimg, dstname, steps, 0);
-
+if (foo) {
+	fprintf(stderr,"%s: err %d on export\n", __func__, foo);
+	}
 fimg_destroy(&fimg);
 
 return 0;