[Travis] Pair up mkdir and cd commands.

.travis.yml

@@ -14,16 +14,14 @@ install:
   # Currently inside the cloned repo path.
   # Install Alphanum
   - cd ../..
-  - mkdir alphanum
-  - cd alphanum
+  - mkdir alphanum && cd alphanum
   - wget http://www.davekoelle.com/files/alphanum.hpp
   - cd ..
   # Install libespm.
   - git clone https://github.com/WrinklyNinja/libespm.git libespm
   # Build yaml-cpp
   - git clone https://github.com/WrinklyNinja/yaml-cpp yaml-cpp
-  - mkdir yaml-cpp/build
-  - cd yaml-cpp/build
+  - mkdir yaml-cpp/build && cd yaml-cpp/build
   - cmake ..
   - make yaml-cpp
   - cd ../../
@@ -31,8 +29,7 @@ install:
   - wget https://github.com/libgit2/libgit2/archive/v0.21.1.tar.gz
   - tar -xf v0.21.1.tar.gz
   - mv libgit2-0.21.1 libgit2
-  - mkdir libgit2/build
-  - cd libgit2/build
+  - mkdir libgit2/build && cd libgit2/build
   - cmake ..
   - make git2
   - cd ../../
@@ -45,16 +42,14 @@ install:
   - cd ..
   # Build libloadorder
   - git clone https://github.com/WrinklyNinja/libloadorder.git libloadorder
-  - mkdir libloadorder/build
-  - cd libloadorder/build
+  - mkdir libloadorder/build && cd libloadorder/build
   - cmake .. -DPROJECT_ARCH=64 -DPROJECT_STATIC_RUNTIME=OFF -DGTEST_ROOT=../gtest-1.7.0
   - make loadorder64
   # Move back into the cloned LOOT repo path.
   - cd $TRAVIS_BUILD_DIR
 
 before_script:
-  - mkdir build
-  - cd build
+  - mkdir build && cd build
   # Travis machines are 64 bit, and the deps use dynamic linking.
   - cmake .. -DPROJECT_ARCH=64 -DPROJECT_STATIC_RUNTIME=OFF -DBUILD_SHARED_LIBS=OFF