meson.build: Fix dependency of page-vary-common.c to config-poison.h

Before compiling page-vary-common.c, we have to make sure that
config-poison.h has been generated (which is in the "genh" list).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/948
Message-Id: <20220330114808.942933-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

meson.build

@@ -2881,7 +2881,7 @@ if get_option('b_lto')
   if get_option('cfi')
     pagevary_flags += '-fno-sanitize=cfi-icall'
   endif
-  pagevary = static_library('page-vary-common', sources: pagevary,
+  pagevary = static_library('page-vary-common', sources: pagevary + genh,
                             c_args: pagevary_flags)
   pagevary = declare_dependency(link_with: pagevary)
 endif