Build contrib filters after the main application

This build flow is more logical and makes sure all the build flags are
set in the right order.

[skip changelog]

aerc.spec

@@ -58,8 +58,6 @@ sed -i "s|github.com/zenhack/go.notmuch|github.com/brunnre8/go.notmuch|" $(find
 echo 'golang(github.com/brunnre8/go.notmuch)'
 
 %build
-%set_build_flags
-make wrap colorize
 export BUILDTAGS=notmuch
 export LDFLAGS="-X main.Version=%{version} \
                 -X main.Prefix=%{_prefix} \
@@ -68,6 +66,12 @@ export LDFLAGS="-X main.Version=%{version} \
                 -X git.sr.ht/~rjarry/aerc/config.libexecDir=%{_libexecdir}"
 %gobuild -o aerc %{goipath}
 
+# The go macros interfere with C build flags.
+# Reset LDFLAGS and set other missing build flags.
+unset LDFLAGS
+%set_build_flags
+%make_build wrap colorize doc
+
 %install
 export PREFIX=%{_prefix}
 %make_install