cgen: fix calling builtin__closure__closure_init() before vinit() with -shared (fix #25417) (#25433)

Author: kbkpbot

vlib/v/gen/c/cgen.v

@@ -6798,9 +6798,6 @@ fn (mut g Gen) write_init_function() {
 		g.export_funcs << '_vinit_caller'
 		g.writeln('void _vinit_caller() {')
 		g.writeln('\tstatic bool once = false; if (once) {return;} once = true;')
-		if g.nr_closures > 0 {
-			g.writeln('\tbuiltin__closure__closure_init(); // vinit_caller()')
-		}
 		g.writeln('\t_vinit(0,0);')
 		g.writeln('}')
 

vlib/v/gen/c/testdata/closure_shared_lib.c.must_have

@@ -1 +1 @@
-__closure_init(); // vinit_caller()
+builtin__closure__closure_init();