Reset the last search term after closing the canvas find dialog so that the...

Reset the last search term after closing the canvas find dialog so that the next search restarts from the beginning again.

pd/nw/pd_canvas.js

@@ -148,6 +148,10 @@ function canvas_find_focus() {
     canvas_events.search();
 }
 
+function canvas_find_reset() {
+    canvas_events.find_reset();
+}
+
 var canvas_events = (function() {
     var name,
         state,
@@ -728,6 +732,9 @@ var canvas_events = (function() {
         match_words: function(state) {
             match_words_state = state;
         },
+        find_reset: function() {
+            last_search_term = "";
+        },
         add_scalar_draggable: function(cid, tag, scalar_sym, drawcommand_sym,
             event_name) {
             scalar_draggables[tag] = {
@@ -1180,6 +1187,9 @@ function nw_create_patch_window_menus(gui, w, name) {
                 // canvas atm.  But if there are other states added later,
                 // we might need to fetch the previous state here.
                 canvas_events.normal();
+                // this resets the last search term so that the next search
+                // starts from the beginning again
+                canvas_events.find_reset();
             }
         }
     });