Make running tokei thread-safe (#42)

Author: giordano

src/count_loc.jl

@@ -3,9 +3,7 @@ function count_loc(dir)
     # This makes it easy to process later, since we have uniform filepaths
     json = cd(dir) do
         try
-            tokei() do exe
-                JSON3.read(read(`$exe --output json .`))
-            end
+            JSON3.read(read(`$(tokei()) --output json .`))
         catch e
             @error e
             missing