Pulled in latest libscriptobject for ScriptItemPtr

* Upgraded Travis build to 4.9

.travis.yml

@@ -10,9 +10,9 @@ before_install:
 - sudo apt-get update -qq
 
 install:
-- sudo apt-get install -qq g++-4.8 zlib1g-dev doxygen npm lcov ruby rubygems libtool
-- export CC="gcc-4.8"
-- export CXX="g++-4.8"
+- sudo apt-get install -qq g++-4.9 zlib1g-dev doxygen npm lcov ruby rubygems libtool
+- export CC="gcc-4.9"
+- export CXX="g++-4.9"
 - pushd ~
 - mkdir Downloads
 - cd Downloads
@@ -30,6 +30,6 @@ install:
 - sudo rm -f /usr/bin/g++
 - sudo rm -f /usr/bin/gcc
 - sudo rm -f /usr/bin/gcov
-- sudo ln -s /usr/bin/g++-4.8 /usr/bin/g++
-- sudo ln -s /usr/bin/gcc-4.8 /usr/bin/gcc
-- sudo ln -s /usr/bin/gcov-4.8 /usr/bin/gcov
+- sudo ln -s /usr/bin/g++-4.9 /usr/bin/g++
+- sudo ln -s /usr/bin/gcc-4.9 /usr/bin/gcc
+- sudo ln -s /usr/bin/gcov-4.9 /usr/bin/gcov

src/avancedb/map_reduce.cpp

@@ -207,9 +207,9 @@ map_reduce_result_array_ptr MapReduce::Execute(rs::jsapi::Runtime& rt, const Map
     rs::jsapi::Value func(rt);
     rt.Evaluate(mapScript.c_str(), func);
 
-    auto state = new MapReduceScriptObjectState{nullptr};
+    auto state = new MapReduceScriptObjectState{};
 
-    rs::scriptobject::ScriptObjectPtr scriptObj = nullptr;
+    rs::scriptobject::ScriptObjectPtr scriptObj;
     rs::jsapi::Value object(rt);
     rs::jsapi::DynamicObject::Create(rt, 
         [&](const char* name, rs::jsapi::Value& value) {

src/avancedb/rest_server.cpp

@@ -896,6 +896,6 @@ rs::scriptobject::ScriptObjectPtr RestServer::GetJsonBody(rs::httpserver::reques
             throw InvalidJson();
         }
     } else {
-        return rs::scriptobject::ScriptObjectPtr(nullptr);
+        return rs::scriptobject::ScriptObjectPtr{};
     }
 }