$NetBSD: patch-src_meson.build,v 1.2 2023/07/26 13:37:35 abs Exp $

meson.build: fix build and avoid sigsegv

https://github.com/glmark2/glmark2/commit/7d4c4da5d34e2e70a285c345c979e5e3c1eb2c3a

Also add x11_dep when -DGLMARK2_USE_GLX

--- src/meson.build.orig	2023-01-19 11:02:15.000000000 +0000
+++ src/meson.build
@@ -71,6 +71,7 @@ libmatrix_headers_dep = declare_dependen
 common_deps = [
     m_dep,
     dl_dep,
+    thread_dep,
     libjpeg_dep,
     libpng_dep,
     libmatrix_headers_dep,
@@ -244,6 +245,7 @@ if need_glx
             include_directories('libmatrix'),
             ],
         compile_args: ['-DGLMARK2_USE_GLX'],
+        dependencies: x11_dep,
         )
 else
     wsi_glx_dep = declare_dependency()