winenas.drv: Remove oldb from nas_add_buffer, where it's unused.
diff --git a/dlls/winenas.drv/audio.c b/dlls/winenas.drv/audio.c
index 391ab40..9140da1 100644
--- a/dlls/winenas.drv/audio.c
+++ b/dlls/winenas.drv/audio.c
@@ -1401,10 +1401,9 @@
 }
 
 static int nas_send_buffer(WINE_WAVEOUT* wwo) {
-  int oldb , len;
+  int len = 0;
   char *ptr, *newdata;
   newdata = NULL;
-  oldb = len = 0;
 
   if (wwo->freeBytes <= 0)
      return 0;