Really fix using install_name_tool with wxrc under OS X.

Don't test for USE_XRC before it is set, correcting the wrong change of
r75845.

See #15946.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@76046 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure

@@ -29188,10 +29188,6 @@ for i in \${libnames} ; do
     ${HOST_PREFIX}install_name_tool \${changes} -id \${3}/\${i} \${1}/\${i}
 done
 EOF
-            if test $USE_XRC = 1; then
-                echo "${HOST_PREFIX}install_name_tool \${changes} \${2}/wxrc-${WX_RELEASE}" >> change-install-names
-            fi
-
             chmod +x change-install-names
             DYLIB_RPATH_INSTALL="\$(wx_top_builddir)/change-install-names \${DESTDIR}\${libdir} \${DESTDIR}\${bindir} \${libdir} \$(wx_top_builddir)/lib"
         fi
@@ -36546,6 +36542,8 @@ $as_echo "$as_me: WARNING: XML library not built, XRC resources disabled" >&2;}
 
         USE_XRC=1
         SAMPLES_SUBDIRS="$SAMPLES_SUBDIRS xrc"
+
+        echo "${HOST_PREFIX}install_name_tool \${changes} \${2}/wxrc-${WX_RELEASE}" >> change-install-names
     fi
 fi