slavapestov/factor — pull request #993 by bjourne (2014-02-11 18:00:18+00:00)
Title: windows.errors: fix #987

Simple fix for #987 Before
```
IN: scratchpad 0xc1 n>win32-error-string .
"Unknown error 0xc1"
```
After
```
IN: scratchpad 0xc1 n>win32-error-string .
"%1 is not a valid Win32 application."
```