Fix contributed upstream here:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42694.

Index: emacs-26.3/src/xfns.c
===================================================================
--- emacs-26.3.orig/src/xfns.c
+++ emacs-26.3/src/xfns.c
@@ -2628,6 +2628,8 @@ xic_free_xfontset (struct frame *f)
 static XIMStyle
 best_xim_style (XIMStyles *xim)
 {
+  if (xim == NULL) goto out;
+
   int i, j;
   int nr_supported = ARRAYELTS (supported_xim_styles);

@@ -2636,6 +2638,7 @@ best_xim_style (XIMStyles *xim)
       if (supported_xim_styles[i] == xim->supported_styles[j])
	return supported_xim_styles[i];

+ out:
   /* Return the default style.  */
   return XIMPreeditNothing | XIMStatusNothing;
 }
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commit/gnu/installer/user.scm?id=48c748226e2a94d2dec9bfdf84601455f00d6f5e'>Revert "installer: user: Remove useless filtering."</a><span class='msg-avail'>...<span class='msg-tooltip'>This reverts commit c2125e59d0774cda3e559adeb056459a5f23586b.

Fixes &lt;https://issues.guix.gnu.org/55361&gt;.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-06 21:19:08 +0200'>2022-04-06</span></td><td><a href='/guix/commit/gnu/installer/user.scm?id=c2125e59d0774cda3e559adeb056459a5f23586b'>installer: user: Remove useless filtering.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/installer/user.scm (users-&gt;configuration): Remove root account filtering
that is now performed in the "run-user-add-page" procedure.
</span></span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-02-02 16:46:44 +0100'>2022-02-02</span></td><td><a href='/guix/commit/gnu/installer/user.scm?id=112ef30b84744872b3a7617d9e54b3df5db95560'>installer: Turn passwords into opaque records.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/installer/user.scm (&lt;secret&gt;, secret?, make-secret,
secret-content): Add opaque &lt;secret&gt; record that boxes its contents,
with a custom printer that doesn't display anything.
* gnu/installer/newt/user.scm (run-user-add-page, run-user-page): Box
it.
* gnu/installer/final.scm (create-user-database): Unbox it.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Josselin Poiret</td></tr>