meson: Add check parameter to run_command

This fixes warnings:

Program xsltproc found: YES (/usr/bin/xsltproc)
WARNING: You should add the boolean check kwarg to the run_command call.
         It currently defaults to false,
         but it will default to true in future releases of meson.
         See also: mesonbuild/meson#9300

Signed-off-by: Petr Vorel <pvorel@suse.cz>

doc/meson.build

@@ -65,7 +65,7 @@ if xsltproc.found()
 	xsltproc_works = true
 	foreach doc_target : doc_targets
 		xsl = 'http://docbook.sourceforge.net/release/xsl-ns/current/' + doc_target + '/docbook.xsl'
-		testrun = run_command([xsltproc, '--nonet', xsl])
+		testrun = run_command([xsltproc, '--nonet', xsl], check: false)
 		if testrun.returncode() != 0
 			xsltproc_works = false
 			message('WARNING: xsltproc: cannot process ' + xsl)

test/ping/meson.build

@@ -7,7 +7,7 @@
 ipv6_dst = []
 ipv6_switch = []
 ip = find_program('ip', required: false)
-if ip.found() and run_command(ip, '-6', 'a').stdout().contains('::1')
+if ip.found() and run_command(ip, '-6', 'a', check: false).stdout().contains('::1')
   message('IPv6 enabled')
   ipv6_dst = [ '::1' ]
   ipv6_switch = [ '-6' ]
@@ -18,7 +18,7 @@ else
 endif
 
 run_as_root = false
-r = run_command('id', '-u')
+r = run_command('id', '-u', check: false)
 if r.stdout().strip().to_int() == 0
   message('running as root')
   run_as_root = true