[newlib-cygwin] Propagate correct Windows error if executable can't be opened

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=4c9bb3e0f934babda5aea0712a70a893f93cff4b

commit 4c9bb3e0f934babda5aea0712a70a893f93cff4b
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Thu Mar 17 17:46:11 2016 +0100

    Propagate correct Windows error if executable can't be opened
    
    	* spawn.cc (av::setup): Set last Win32 error if NtOpenFile fails.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/spawn.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/winsup/cygwin/spawn.cc b/winsup/cygwin/spawn.cc
index 1cc5cf3..a2111c2 100644
--- a/winsup/cygwin/spawn.cc
+++ b/winsup/cygwin/spawn.cc
@@ -1085,6 +1085,7 @@ av::setup (const char *prog_arg, path_conv& real_path, const char *ext,
 		real_path.set_cygexec (true);
 		break;
 	      }
+	    SetLastError (RtlNtStatusToDosError (status));
 	    goto err;
 	  }
 	if (!GetFileSizeEx (h, &size))