Silence a minor git warning

No need to pollute the CI log output.

CI/before_script.android.sh

@@ -3,6 +3,9 @@
 # hack to work around: FFmpeg version is too old, 3.2 is required
 sed -i s/"NOT FFVER_OK"/"FALSE"/ CMakeLists.txt
 
+# Silence a git warning
+git config --global advice.detachedHead false
+
 mkdir -p build
 cd build
 

CI/before_script.linux.sh

@@ -4,6 +4,9 @@ set -xeo pipefail
 
 free -m
 
+# Silence a git warning
+git config --global advice.detachedHead false
+
 BUILD_UNITTESTS=OFF
 BUILD_BENCHMARKS=OFF
 

CI/before_script.osx.sh

@@ -3,6 +3,9 @@
 export CXX=clang++
 export CC=clang
 
+# Silence a git warning
+git config --global advice.detachedHead false
+
 DEPENDENCIES_ROOT="/private/tmp/openmw-deps/openmw-deps"
 QT_PATH=$(brew --prefix qt@5)
 CCACHE_EXECUTABLE=$(brew --prefix ccache)/bin/ccache