plotkicadsch: fix bug when not specifying output directory

Author: jnavila

plotkicadsch/src/plotkicadsch.ml

@@ -19,7 +19,7 @@ let process_libs libs =
 let () =
   let files = ref [] in
   let libs = ref [] in
-  let outpath = ref "" in
+  let outpath = ref "." in
   let speclist = [
       ("-l", Arg.String (fun lib -> libs := lib::!libs), "specify component library");
       ("-f", Arg.String(fun sch -> files := sch::!files), "sch file to process");