Fix .0 version number

Author: No9

build/init/fetch-linux-headers.sh

@@ -42,6 +42,11 @@ fetch_generic_linux_sources()
   kernel_version="$(echo "${KERNEL_VERSION}" | awk -vFS='[-+]' '{ print $1 }')"
   major_version="$(echo "${KERNEL_VERSION}" | awk -vFS=. '{ print $1 }')"
 
+  # Remove the '.0' as the intial kernel major release isn't published with a patch number. 
+  if [[ $kernel_version == *.0 ]]; then
+    kernel_version=$(echo $kernel_version | rev | sed s/0\.// | rev)
+  fi
+
   echo "Fetching upstream kernel sources for ${kernel_version}."
   mkdir -p "${BUILD_DIR}"
   curl -sL "https://www.kernel.org/pub/linux/kernel/v${major_version}.x/linux-$kernel_version.tar.gz" \