build_all.d: Don't run makensis when NoVagrant

[ibuclaw]

Error:

[51](https://github.com/dlang/dmd/actions/runs/22587806683/job/65437999779#step:6:6352)
Processing script file: "d2-installer.nsi" (ACP)
ReserveFile: "C:\Program Files (x86)\NSIS\Plugins\x86-unicode\INetC.dll" -> no files found.
Usage: ReserveFile [/nonfatal] [/r] [/x filespec [...]] file [file...] | [/nonfatal] /plugin file.dll
Error in script "d2-installer.nsi" on line 236 -- aborting creation process

Occurs because plug-in is not installed at the time that build_all.d is ran.

This step is rather handled in the GHA template after build_all.d has finished.

installer/.github/workflows/build_release_template.yml

Lines 240 to 259 in 209743e

	./build_all --targets=${{ matrix.target }} "v$LDC" ${{ inputs.release_branch }}
	- name: 'Windows: Build NSIS installer'
	if: matrix.target == 'windows'
	shell: cmd
	run: |
	:: install NSIS plugin from https://nsis.sourceforge.io/Inetc_plug-in
	curl -fsSL https://nsis.sourceforge.io/mediawiki/images/c/c9/Inetc.zip -o inetc.zip || exit /b
	7z x inetc.zip -y -bb1 "-oc:\Program Files (x86)\NSIS" || exit /b
	:: unpack release .7z generated in previous step
	7z x create_dmd_release\build\dmd.${{ inputs.release_branch }}.windows.7z -odmd.windows || exit /b
	@echo on
	"c:\Program Files (x86)\NSIS\makensis" /version
	for /f %%v in (dmd.windows\dmd2\src\VERSION) do set ver=%%v
	cd windows || exit /b
	"c:\Program Files (x86)\NSIS\makensis" /DVersion2=%ver% /DEmbedD2Dir=..\dmd.windows\dmd2 d2-installer.nsi || exit /b
	ren dmd-%ver%.exe dmd-${{ inputs.release_branch }}.exe || exit /b
	copy dmd-*.exe ..\create_dmd_release\build || exit /b

[dlang-bot]

Thanks for your pull request, @ibuclaw!

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