kernel32: Fix GetTempFileName with invalid path.

dlls/kernel32/path.c

@@ -660,6 +660,7 @@ UINT WINAPI GetTempFileNameW( LPCWSTR path, LPCWSTR prefix, UINT unique, LPWSTR
 
     int i;
     LPWSTR p;
+    DWORD attr;
 
     if ( !path || !buffer )
     {
@@ -667,6 +668,15 @@ UINT WINAPI GetTempFileNameW( LPCWSTR path, LPCWSTR prefix, UINT unique, LPWSTR
         return 0;
     }
 
+    /* ensure that the provided directory exists */
+    attr = GetFileAttributesW(path);
+    if (attr == INVALID_FILE_ATTRIBUTES || !(attr & FILE_ATTRIBUTE_DIRECTORY))
+    {
+        TRACE("path not found %s\n", debugstr_w(path));
+        SetLastError( ERROR_DIRECTORY );
+        return 0;
+    }
+
     strcpyW( buffer, path );
     p = buffer + strlenW(buffer);
 

dlls/kernel32/tests/path.c

@@ -364,9 +364,7 @@ static void test_InitPathA(CHAR *newdir, CHAR *curDrive, CHAR *otherDrive)
     /* Non-existent path */
     sprintf(invalid_dir, "%s\%s",tmppath,"non_existent_dir_1jwj3y32nb3");
     SetLastError(0xdeadbeef);
-    todo_wine
     ok(!GetTempFileNameA(invalid_dir,"tfn",unique,newdir),"GetTempFileNameA should have failed\n");
-    todo_wine
     ok(GetLastError()==ERROR_DIRECTORY || broken(GetLastError()==ERROR_PATH_NOT_FOUND)/*win98*/,
     "got %d, expected ERROR_DIRECTORY\n", GetLastError());