Set artificial to true on comint-send-input

From comint-send-input:

> After the input has been sent, if `comint-process-echoes' is non-nil,
then `comint-send-input' waits to see if the process outputs a string
matching the input, and if so, deletes that part of the output.
If ARTIFICIAL is non-nil, it inhibits such deletion.
Callers sending input not from the user should use ARTIFICIAL = t.

Seems to mess up a buffer somewhere and output isn't
flushed. Extremely important

Author: dpsutton

inf-clojure.el

@@ -769,7 +769,7 @@ Indent FORM.  FORM is expected to have been trimmed."
         (let ((end (point)))
           (goto-char beginning)
           (indent-sexp end)))
-      (comint-send-input t))))
+      (comint-send-input t t))))
 
 (defun inf-clojure-insert-defun ()
   "Send current defun to process."