Index: work/alien_formats/altium_parser/main.c
===================================================================
--- work/alien_formats/altium_parser/main.c	(revision 35274)
+++ work/alien_formats/altium_parser/main.c	(revision 35275)
@@ -7,6 +7,7 @@
 	const char *fn = "A.PcbDoc";
 	FILE *f;
 	altium_tree_t tree = {0};
+	int res;
 	
 	f = fopen(fn, "r");
 	if (f == NULL) {
@@ -13,8 +14,10 @@
 		fprintf(stderr, "can't open %s for read\n", fn);
 		return -1;
 	}
+	res = pcbdoc_ascii_test_parse(NULL, 0, fn, f);
+	fclose(f);
 
-	if (!pcbdoc_ascii_test_parse(NULL, 0, fn, f)) {
+	if (!res) {
 		fprintf(stderr, "test parse says '%s' is not a PcbDoc\n", fn);
 		return -1;
 	}