buflist: fix extra spaces between buffers when conditions are used to hide buffers (closes #1403)

This is a regression introduced in version 2.6 by commit
bf21ca072d.

ChangeLog.adoc

@@ -18,7 +18,12 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 [[v2.7]]
 == Version 2.7 (under dev)
 
+Bug fixes::
+
+  * buflist: fix extra spaces between buffers when conditions are used to hide buffers (regression introduced in version 2.6) (issue #1403)
+
 Build::
+
   * core: remove file FindTCL.cmake
   * core: display an error on missing dependency in CMake (issue #916, issue #956)
 

src/plugins/buflist/buflist-bar-item.c

@@ -359,13 +359,6 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
                                              ptr_buffer, "name");
         }
 
-        if (weechat_config_boolean (buflist_config_look_add_newline)
-            && *buflist[0])
-        {
-            if (!weechat_string_dyn_concat (buflist, "\n"))
-                goto error;
-        }
-
         /* current buffer */
         current_buffer = (ptr_buffer == ptr_current_buffer);
         weechat_hashtable_set (buflist_hashtable_extra_vars,
@@ -588,6 +581,14 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
             line_number_current_buffer = line_number;
         prev_number = number;
 
+        /* add newline between each buffer (if needed) */
+        if (weechat_config_boolean (buflist_config_look_add_newline)
+            && *buflist[0])
+        {
+            if (!weechat_string_dyn_concat (buflist, "\n"))
+                goto error;
+        }
+
         /* build string */
         line = weechat_string_eval_expression (
             (current_buffer) ? ptr_format_current : ptr_format,