hack: set errno to ENOENT when -1 fails, so that the error isn't too ugly

The caller assumes that any error would be signaled via errno. A proper
solution would be to allow also for non-errno errors.



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@6004 99fdad57-331a-0410-800a-d7fa5415bdb3

postscript.c

@@ -14,6 +14,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <errno.h>
 
 #include "util.h"
 #include "coord.h"
@@ -1095,6 +1096,7 @@ static int ps_for_all_pkg(FILE *file,
 				pages++;
 	if (one && !pages) {
 		fprintf(stderr, "no package \"%s\" to select\n", one);
+		errno = ENOENT;
 		return 0;
 	}
 	prologue(file, pages);