close chatwindow if its associated contact is blocked/deleted

src/friendlist.c

@@ -450,11 +450,20 @@ static void select_friend(ToxWindow *self, wint_t key, int *selected, int num)
 
 static void delete_friend(Tox *m, int32_t f_num)
 {
+    int i;
+
+    if (friends[f_num].chatwin >= 0) {
+        ToxWindow *toxwin = get_window_ptr(friends[f_num].chatwin);
+
+        if (toxwin != NULL) {
+            kill_chat_window(toxwin);
+            set_active_window(1);   /* keep friendlist focused */
+        }
+    }
+
     tox_del_friend(m, f_num);
     memset(&friends[f_num], 0, sizeof(ToxicFriend));
 
-    int i;
-
     for (i = max_friends_index; i > 0; --i) {
         if (friends[i - 1].active)
             break;

src/windows.c

@@ -480,6 +480,17 @@ void refresh_inactive_windows(void)
     }
 }
 
+/* returns a pointer to the ToxWindow in the ith index. Returns NULL if no ToxWindow exists */
+ToxWindow *get_window_ptr(int i)
+{
+    ToxWindow *toxwin = NULL;
+
+    if (windows[i].active)
+        toxwin = &windows[i];
+
+    return toxwin;
+}
+
 int get_num_active_windows(void)
 {
     return num_active_windows;

src/windows.h

@@ -225,6 +225,7 @@ void set_active_window(int ch);
 int get_num_active_windows(void);
 void kill_all_windows(void);    /* should only be called on shutdown */
 void on_window_resize(void);
+ToxWindow *get_window_ptr(int i);
 
 /* refresh inactive windows to prevent scrolling bugs. 
    call at least once per second */