Fix editor_diagnostics tool

Author: ericdallo

eca-util.el

@@ -166,11 +166,10 @@
   "Convert a file URI to a file path."
   (cond
    ((string-prefix-p "file:///" uri)
-    (url-unhex-string (substring uri 8)))
-
-   ((string-prefix-p "file://" uri)
     (url-unhex-string (substring uri 7)))
 
+   ((string-prefix-p "file://" uri)
+    (url-unhex-string (substring uri 6)))
 
    (t uri)))