use debian.sh on master branch

Author: yetist

.travis.yml

@@ -133,9 +133,8 @@ configures:
     - --enable-pulse
 
 before_scripts:
-  # These scripts should keep silent.
   - if [ ${DISTRO_NAME} == "debian" ];then
-  - curl -Ls -o debian.sh https://github.com/mate-desktop/mate-dev-scripts/raw/os-fix/travis/debian.sh
+  -     curl -Ls -o debian.sh https://github.com/mate-desktop/mate-dev-scripts/raw/master/travis/debian.sh
   - bash ./debian.sh
   - fi