Two fixlets for coverage test (#38183)

src/coverage/meson.build

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+if get_option('b_coverage')
+        userspace_c_args += ['-include', meson.current_source_dir() / 'coverage.h']
+        userspace_sources += files('coverage.h')
+endif

src/version/meson.build

@@ -13,3 +13,4 @@ version_h = custom_target('version',
                 vcs_tag ? '1' : '0',
         ])
 version_include = include_directories('.')
+userspace_sources += [version_h]