skip 32 shared build with io.js

scripts/build_against_node.sh

@@ -71,8 +71,11 @@ if [[ $(uname -s) == 'Linux' ]]; then
     npm test
     publish
     make clean
+    # broken for some unknown reason against io.js
+    if [[ ${NODE_VERSION:0:4} != 'iojs' ]]; then
         # test source compile in 32 bit mode against external libsqlite3
         sudo apt-get -y install libsqlite3-dev:i386
         CC=gcc-4.6 CXX=g++-4.6 npm install --build-from-source --sqlite=/usr
         npm test
+    fi
 fi