some cleanups when chasing unappropriate stdout output. Daniel

* debugXML.c tree.c xmlIO.c xmlmemory.c: some cleanups when chasing
  unappropriate stdout output.
Daniel
diff --git a/tree.c b/tree.c
index c55f4ff..12a8333 100644
--- a/tree.c
+++ b/tree.c
@@ -4929,7 +4929,8 @@
 #endif
 	return(0);
     }
-    if (file == NULL) file = stdout;
+    if (file == NULL)
+	file = stdout;
     ret = fwrite(buf->content, sizeof(xmlChar), buf->use, file);
     return(ret);
 }