fix(gutenbuild): ensure we are on master before building

gutenbuild can sometimes fail halfway through the process. In those cases,
we should ensure that we are on the master branch first rather than restore the master branch later.

Author: Matthew Fisher

_scripts/gutenbuild

@@ -5,6 +5,9 @@ set -x
 
 build_dest=$1
 
+# ensure we are on the master branch before building
+git checkout master
+
 PATH=$HOME/.local/bin:$PATH BUILDDIR=${build_dest} make deps build
 
 # build again, this time to /en/dev
@@ -18,6 +21,3 @@ for tag in $(git tag | grep -v "-alpha\|-beta\|-rc"); do
   git checkout $tag
   PATH=$HOME/.local/bin:$PATH BUILDDIR=${tag_build_dest} make deps build
 done
-
-# restore back to master
-git checkout master