travis: fix commit content

Author: 0xc0170

.travis.yml

@@ -106,15 +106,7 @@ matrix:
       - astyle --version
       script:
         # only changed files to be checked for astyle
-        - COMMIT_RANGE=${TRAVIS_COMMIT_RANGE/.../..}
-        - if [! git diff --quiet "$COMMIT_RANGE" -- ]
-          then
-              COMMIT_CONTENT=`git diff-tree --no-commit-id --name-only -r $TRAVIS_COMMIT`
-          else
-              COMMIT_CONTENT=`git diff --name-only $COMMIT_RANGE`
-          fi
-        - echo $COMMIT_CONTENT
-        - find -regex '.*\.\(h\|c\|hpp\|cpp\)' -type f | fgrep -v -f .astyleignore | $COMMIT_CONTENT | xargs -n 100 -I {} bash -c "astyle -n --options=.astylerc \"{}\"" > astyle.out;
+        - git diff --name-only $TRAVIS_BRANCH | grep '.*\.\(h\|c\|hpp\|cpp\)' | fgrep -v -f .astyleignore | xargs -n 100 -I {} bash -c "astyle -n --options=.astylerc \"{}\"" > astyle.out;
           if [ $(cat astyle.out | grep Formatted | wc -l) -ne 0 ]; then
             git --no-pager diff;
             echo "Please fix style issues as shown above";