File shim_headers-fix-ninja.patch of Package nodejs-electron.v3

Correct output path of ninja shim_headers rule
This is not needed for a succesful build on OBS but makes building it manually way easier

--- src/build/shim_headers.gni.orig
+++ src/build/shim_headers.gni
@@ -28,8 +28,10 @@
     }
     args += invoker.headers
 
-    outputs = process_file_template(invoker.headers,
-                                    "${shim_headers_path}/{{source_file_part}}")
+    outputs = []
+    foreach(h, invoker.headers) {
+      outputs += [ shim_headers_path + "/" + rebase_path(invoker.root_path,"//") + "/" + h ]
+    }
   }
 
   group(target_name) {