Insert a space when undoing autocorrect (#1232)

This prevents the same suggestions to be presented again and autocorrect
to be activated again when pressing space.

This extra space is wanted because pressing the spacebar triggered
autocorrect in the first place.

srcs/juloo.keyboard2/KeyEventHandler.java

@@ -540,7 +540,8 @@ public final class KeyEventHandler
   {
     if (last_replaced_word != null)
     {
-      replace_text_before_cursor(last_replacement_word_len, last_replaced_word);
+      replace_text_before_cursor(last_replacement_word_len,
+          last_replaced_word + " ");
       last_replaced_word = null;
     }
     else