Only raise symlink failure error if target exists

Author: jinmannwong

ecbundle/util.py

@@ -124,7 +124,7 @@ def symlink_force(target, link_name):
             os.remove(link_name)
             os.symlink(target_orig, link_name)
 
-    if not os.path.exists(link_name):
+    if os.path.exists(target_orig) and not os.path.exists(link_name):
         error(
             "ERROR: Failed to create valid link from {0} to {1}".format(
                 link_name, target_orig