wineps.drv: Flush spool data even if there are no pages to print.

dlls/wineps.drv/printproc.c

@@ -3140,6 +3140,7 @@ BOOL WINAPI PrintDocumentOnPrintProcessor(HANDLE pp, WCHAR *doc_name)
 cleanup:
     if (data->ctx->job.PageNo)
         PSDRV_WriteFooter(data->ctx);
+    flush_spool(data->ctx);
 
     HeapFree(GetProcessHeap(), 0, data->ctx->job.doc_name);
     ClosePrinter(spool_data);

dlls/wineps.drv/ps.c

@@ -502,7 +502,7 @@ INT PSDRV_WriteFooter( print_ctx *ctx )
 
     sprintf(buf, psfooter, ctx->job.PageNo);
 
-    if( write_spool( ctx, buf, strlen(buf) ) != strlen(buf) || !flush_spool(ctx) ) {
+    if( write_spool( ctx, buf, strlen(buf) ) != strlen(buf) ) {
         WARN("WriteSpool error\n");
         ret = 0;
     }