core: fix context info in buffers with free content (closes #1832)

ChangeLog.adoc

@@ -15,6 +15,13 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 (file _ReleaseNotes.adoc_ in sources).
 
 
+[[v3.8]]
+== Version 3.8 (under dev)
+
+Bug fixes::
+
+  * core: fix context info in buffers with free content (issue #1832)
+
 [[v3.7]]
 == Version 3.7 (2022-10-09)
 

src/gui/gui-line.c

@@ -294,6 +294,10 @@ gui_line_get_align (struct t_gui_buffer *buffer, struct t_gui_line *line,
 {
     int length_time, length_buffer, length_suffix, prefix_length, prefix_is_nick;
 
+    /* return immediately if buffer has free content (no alignment) */
+    if (buffer->type == GUI_BUFFER_TYPE_FREE)
+        return 0;
+
     /* return immediately if line has no time (not aligned) */
     if (line->data->date == 0)
         return 0;