msvcrt: Fixed tmpfile implementation.

dlls/msvcrt/file.c

@@ -3754,16 +3754,20 @@ MSVCRT_FILE* CDECL MSVCRT_tmpfile(void)
   MSVCRT_FILE* file = NULL;
 
   LOCK_FILES();
-  fd = MSVCRT__open(filename, MSVCRT__O_CREAT | MSVCRT__O_BINARY | MSVCRT__O_RDWR | MSVCRT__O_TEMPORARY);
+  fd = MSVCRT__open(filename, MSVCRT__O_CREAT | MSVCRT__O_BINARY | MSVCRT__O_RDWR | MSVCRT__O_TEMPORARY,
+          MSVCRT__S_IREAD | MSVCRT__S_IWRITE);
   if (fd != -1 && (file = msvcrt_alloc_fp()))
   {
-    if (msvcrt_init_fp(file, fd, MSVCRT__O_RDWR) == -1)
+    if (msvcrt_init_fp(file, fd, MSVCRT__IORW) == -1)
     {
         file->_flag = 0;
         file = NULL;
     }
     else file->_tmpfname = MSVCRT__strdup(filename);
   }
+
+  if(fd != -1 && !file)
+      MSVCRT__close(fd);
   UNLOCK_FILES();
   return file;
 }