[travis] fix typo fifi to end shell if

.travis.yml

@@ -12,7 +12,7 @@ python:
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq gcc liblapack-dev libatlas-base-dev libgsl0-dev fftw-dev libglpk-dev libdsdp-dev
-  - if [[ $TRAVIS_PYTHON_VERSION != *"with_system_site_packages" ]]; then sudo apt-get install -qq gfortran; fifi
+  - if [[ $TRAVIS_PYTHON_VERSION != *"with_system_site_packages" ]]; then sudo apt-get install -qq gfortran; fi
   - if [[ $TRAVIS_PYTHON_VERSION == "2.7_with_system_site_packages" ]]; then sudo apt-get install -qq python-numpy python-scipy; fi
   - if [[ $TRAVIS_PYTHON_VERSION == "3.2_with_system_site_packages" ]]; then sudo apt-get install -qq python3-numpy python3-scipy; fi
 install: