[PATCH 4/5] travis.yml: Fix the ccache lines

[Thomas Huth]

The "command -v ccache && ccache ..." likely were supposed to test
the availability of ccache before running the program. But this
shell construct causes Travis to abort if ccache is not available.
Use an if-statement instead to fix this problem.

Signed-off-by: Thomas Huth <address@hidden>
---
 .travis.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 616e59867a..0c88e8757b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -91,13 +91,13 @@ git:
 
 before_script:
   - if [ "$TRAVIS_OS_NAME" == "osx" ] ; then export 
PATH="/usr/local/opt/ccache/libexec:$PATH" ; fi
-  - command -v ccache && ccache --zero-stats
+  - if command -v ccache ; then ccache --zero-stats ; fi
   - mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
   - ${SRC_DIR}/configure ${BASE_CONFIG} ${CONFIG} || { cat config.log && exit 
1; }
 script:
   - make -j3 && travis_retry ${TEST_CMD}
 after_script:
-  - command -v ccache && ccache --show-stats
+  - if command -v ccache ; then ccache --show-stats ; fi
 
 
 matrix:
-- 
2.18.1