Appending to an empty list is unnecessary

Author: jovial

vars/Debian.yml

@@ -12,7 +12,7 @@ libvirt_vm_extra_packages_efi:
   - ovmf
 
 # List of extra packages to install
-libvirt_vm_extra_packages: "{{ [] + (libvirt_vm_extra_packages_efi if libvirt_vm_enable_efi_support else []) | unique }}"
+libvirt_vm_extra_packages: "{{ libvirt_vm_extra_packages_efi if libvirt_vm_enable_efi_support else [] | unique }}"
 
 # Path to template OVMF efi variable store. A copy will be created
 # for each VM created.

vars/RedHat.yml

@@ -15,7 +15,7 @@ libvirt_vm_extra_packages_efi:
   - qemu-kvm-ev # Need smm support for secure boot
 
 # List of extra packages to install
-libvirt_vm_extra_packages: "{{ [] + (libvirt_vm_extra_packages_efi if libvirt_vm_enable_efi_support else []) | unique }}"
+libvirt_vm_extra_packages: "{{ libvirt_vm_extra_packages_efi if libvirt_vm_enable_efi_support else [] | unique }}"
 
 # Path to template OVMF efi variable store. A copy will be created
 # for each VM created.
@@ -42,5 +42,5 @@ libvirt_vm_custom_yum_repos_efi:
     baseurl: http://mirror.centos.org/$contentdir/$releasever/virt/$basearch/kvm-common/
     gpgcheck: yes
 
-libvirt_vm_custom_yum_repos: "{{ [] + (libvirt_vm_custom_yum_repos_efi if libvirt_vm_enable_efi_support else []) | unique }}"
+libvirt_vm_custom_yum_repos: "{{ libvirt_vm_custom_yum_repos_efi if libvirt_vm_enable_efi_support else [] | unique }}"