Merge branch 'fix-non-latest-kernel-usage' into 'master'

build-image: Use non-latest kernel when it already exists

See merge request Librem5/image-builder!82

build-image

@@ -164,8 +164,10 @@ if [ "${build_type}" == "latest" ]; then
     custom_package_opt=(--custom-package "${kernel_deb}")
 else
     kernel_url=https://storage.puri.sm/librem5/binaries/${build_type}/latest/files/
-    if [ -n "${kernel_deb}" ] && [ ! -f "files/${kernel_deb}" ]; then
-	wget -Pfiles/ "${kernel_url}/${kernel_deb}"
+    if [ -n "${kernel_deb}" ]; then
+	if [ ! -f "files/${kernel_deb}" ]; then
+	    wget -Pfiles/ "${kernel_url}/${kernel_deb}"
+	fi
 	custom_package_opt=(--custom-package "files/${kernel_deb}")
     fi