meson: Fix meson warning

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 meson 2.0.

Introduced by commit bc46104fc9.

(This only happens in the msvc branch.  All the other run_command
calls are ok.)

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/42e13eb0-862a-441e-8d84-4f0fd5f6def0%40eisentraut.org

meson.build

@@ -1061,7 +1061,7 @@ if not perlopt.disabled()
       if cc.get_id() == 'msvc'
         # prevent binary mismatch between MSVC built plperl and Strawberry or
         # msys ucrt perl libraries
-        perl_v = run_command(perl, '-V').stdout()
+        perl_v = run_command(perl, '-V', check: false).stdout()
         if not perl_v.contains('USE_THREAD_SAFE_LOCALE')
           perl_ccflags += ['-DNO_THREAD_SAFE_LOCALE']
         endif