Exclude msan builds from g++

Author: deanberris

.travis.yml

@@ -23,7 +23,7 @@ matrix:
     - compiler: g++
       env: BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=address"
     - compiler: g++
-      env: BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=memory"
+      env: BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2"
 install:
 - mkdir -p ${HOME}/bin
 - if [ "${CC}" = "gcc" ]; then export TOOLSET="gcc"; ln -s `which g++-4.8` ${HOME}/bin/g++;