add missing -qq to travis script

This should allow to properly install gcc 4.9

.travis.yml

@@ -33,7 +33,7 @@ before_install:
 install:
     - time sudo apt-get update -qq
     - time sudo apt-get install -qq libboost-iostreams-dev libboost-program-options-dev libboost-regex-dev libboost-system-dev libboost-test-dev libcairo2-dev libfribidi-dev libpango1.0-dev libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-net1.2-dev libsdl-ttf2.0-dev gdb
-    - if [ "$CXX" = "g++" ]; then time sudo apt-get install g++-4.9; fi
+    - if [ "$CXX" = "g++" ]; then time sudo apt-get -qq install g++-4.9; fi
     - if [ "$CXX" = "g++" ]; then export CXX="g++-4.9"; fi
     - if [ "$CHECK_UTF8" = true ]; then time sudo apt-get install -qq moreutils; fi