move scope wrapper around main/process to test

lox/main.janet

···
 (import ./interpreter)
 
 (defn process [contents]
-  (with-dyns [] (-> contents
-                    scanner/scan
-                    parser/make-parser
-                    :parse
-                    interpreter/interpret)))
+  (-> contents
+      scanner/scan
+      parser/make-parser
+      :parse
+      interpreter/interpret))
 
 (defn run-repl [process]
   (os/sigaction :int nil)

test/test_main.janet

···
 (use judge)
-(use ../lox/main)
+(import ../lox/main)
+
+(defn- process [& args]
+  (with-dyns [] (main/process ;args)))
 
 (test-stdout (process "print 2 * (1 + 2);") `
   6