Prevent jhalfs from trying to run an example command

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9289 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/gmp.xml

@@ -47,8 +47,7 @@
       <envar>CFLAGS</envar> in the environment, the configure script will
       attempt to configure for 64-bits and fail.
       Avoid this by invoking the configure command below with
-      <screen><userinput><parameter>ABI=32</parameter>  ./configure ...</userinput>
-      </screen></para>
+<screen role="nodump"><userinput><parameter>ABI=32</parameter> ./configure ...</userinput></screen></para>
     </note>
 
     <para>Prepare GMP for compilation:</para>