Do not commit a file if it's size <= 0

src/TJAlienFile.cxx

@@ -514,8 +514,10 @@ void TJAlienFile::Close(Option_t * option)
     TString command("commit");
 
     Long64_t siz = GetSize();
-    if (siz <= 0)
+    if (siz <= 0) {
         Error("Close", "the reported size of the written file is <= 0");
+        return;
+    }
 
     command += " \"";
     command += fAuthz;