[travis] Only run check-doc.py once

.travis.yml

@@ -11,6 +11,7 @@ env:
   global:
     - MAKEJOBS=-j3
     - RUN_TESTS=false
+    - CHECK_DOC=0
     - BOOST_TEST_RANDOM=1$TRAVIS_BUILD_ID
     - CCACHE_SIZE=100M
     - CCACHE_TEMPDIR=/tmp/.ccache-temp
@@ -29,7 +30,7 @@ matrix:
   fast_finish: true
   include:
     - compiler: ": ARM"
-      env: HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
+      env: HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" CHECK_DOC=1 GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
     - compiler: ": Win32"
       env: HOST=i686-w64-mingw32 PPA="ppa:ubuntu-wine/ppa" PACKAGES="nsis gcc-mingw-w64-i686 g++-mingw-w64-i686 binutils-mingw-w64-i686 mingw-w64-dev wine1.7 bc" RUN_TESTS=true GOAL="deploy" BITCOIN_CONFIG="--enable-gui --enable-reduce-exports" MAKEJOBS="-j2"
     - compiler: ": 32-bit + dash"
@@ -61,10 +62,10 @@ script:
     - BITCOIN_CONFIG_ALL="--disable-dependency-tracking --prefix=$TRAVIS_BUILD_DIR/depends/$HOST --bindir=$OUTDIR/bin --libdir=$OUTDIR/lib"
     - depends/$HOST/native/bin/ccache --max-size=$CCACHE_SIZE
     - if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then export CCACHE_READONLY=1; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi
     - test -n "$USE_SHELL" && eval '"$USE_SHELL" -c "./autogen.sh"' || ./autogen.sh
     - ./configure --cache-file=config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
     - make distdir PACKAGE=bitcoin VERSION=$HOST
-    - if [ "$RUN_TESTS" = "true" ]; then contrib/devtools/check-doc.py; fi
     - cd bitcoin-$HOST
     - ./configure --cache-file=../config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
     - make $MAKEJOBS $GOAL || ( echo "Build failure. Verbose build follows." && make $GOAL V=1 ; false )