JS-91: fix 32 bit builds

Same sed as for firefox

general/genlib/js91.xml

@@ -141,14 +141,17 @@ tar: Exiting with failure status due to previous errors
       </para>
 
     </note>
-<!--
+
     <para>
-      Apply a patch to allow building this package with Python-3.10 or
-      later:
+      If building on a 32 bit machine, the following sed works around an issue
+      with an incompatible <quote>double</quote> type in one header file:
     </para>
 
-<screen><userinput>patch -Np1 -i ../js-&JS91-version;-python_3_10-1.patch</userinput></screen>
--->
+<screen><userinput>case "$(uname -m)" in
+    i?86) sed -e '/typedef[ ]*double/s/double/long double/' \
+              -i modules/fdlibm/src/math_private.h ;;
+esac</userinput></screen>
+
     <para>
       Install <application>JS</application> by running the following
       commands:

introduction/welcome/changelog.xml

@@ -45,6 +45,10 @@
     <listitem>
       <para>April 25th, 2022</para>
       <itemizedlist>
+        <listitem>
+          <para>[pierre] - JS-91 needs the same fix as firefox for
+          32 bit machines.</para>
+        </listitem>
         <listitem>
           <para>[bdubbs] - Update to harfbuzz-4.2.1. Fixes
           <ulink url="&blfs-ticket-root;16465">#16465</ulink>.</para>