crash on windows box in the file editor

[Denis-de-Bernardy]

when you try to save a non-writable file:

Warning: fopen(c:\Inetpub\wwwroot\semiologic2/index.php) [function.fopen]: failed to open stream: Permission denied in c:\Inetpub\wwwroot\semiologic2\wp-admin\templates.php on line 44

Warning: fwrite(): supplied argument is not a valid stream resource in c:\Inetpub\wwwroot\semiologic2\wp-admin\templates.php on line 45

Warning: fclose(): supplied argument is not a valid stream resource in c:\Inetpub\wwwroot\semiologic2\wp-admin\templates.php on line 46

Warning: Cannot modify header information - headers already sent by (output started at c:\Inetpub\wwwroot\semiologic2\wp-admin\templates.php:44) in c:\Inetpub\wwwroot\semiologic2\wp-admin\templates.php on line 47

[ryan]

(In [3335]) Add error checking to file save. fixes #2109