Improve error reporting for DOC file problems

* src/doc.c (get_doc_string): Report all serious errors
when DOC cannot be opened, not just fd-exhaustion errors.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/doc.c b/src/doc.c
index 247be79adaf..b06b87c6114 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -136,7 +136,7 @@ get_doc_string (Lisp_Object filepos, bool unibyte, bool definition)
         }
       if (fd < 0)
         {
-          if (errno == EMFILE || errno == ENFILE)
+          if (errno != ENOENT && errno != ENOTDIR)
             report_file_error ("Read error on documentation file", file);
 
           SAFE_FREE ();