Check for Void path in Deletefile

[Uwe Bonnes]

Tested against win95

Changelog:
	files/file.c: Deletefile
	Expect NULL as path argument
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
Index: wine/files/file.c
===================================================================
RCS file: /home/wine/wine/files/file.c,v
retrieving revision 1.109
diff -u -w -r1.109 file.c
--- wine/files/file.c	25 Sep 2001 22:37:32 -0000	1.109
+++ wine/files/file.c	27 Sep 2001 14:09:25 -0000
@@ -1934,6 +1934,11 @@
 {
     DOS_FULL_NAME full_name;
 
+    if (!path)
+      {
+	SetLastError(ERROR_INVALID_PARAMETER);
+	return FALSE;
+      }
     TRACE("'%s'\n", path );
 
     if (!*path)