cgen: fix alias indent (fix #26272) (#26333)

Author: kbkpbot

vlib/v/gen/c/auto_str_methods.v

@@ -282,20 +282,17 @@ fn (mut g Gen) gen_str_for_alias(info ast.Alias, styp string, str_fn_name string
 	g.auto_str_funcs.writeln('${g.static_non_parallel}string indent_${str_fn_name}(${arg_def}, ${ast.int_type_name} indent_count) {')
 	old := g.reset_tmp_count()
 	defer { g.tmp_count = old }
-	g.auto_str_funcs.writeln('\tstring indents = builtin__string_repeat(_S("    "), indent_count);')
 	if str_method_expects_ptr {
 		it_arg := if is_c_struct { 'it' } else { '&it' }
 		g.auto_str_funcs.writeln('\tstring tmp_ds = ${parent_str_fn_name}(${it_arg});')
 	} else {
 		deref, _ := deref_kind(str_method_expects_ptr, info.parent_type.is_ptr(), info.parent_type)
 		g.auto_str_funcs.writeln('\tstring tmp_ds = ${parent_str_fn_name}(${deref}it);')
 	}
-	g.auto_str_funcs.writeln('\tstring res = builtin__str_intp(3, _MOV((StrIntpData[]){
-		{_SLIT0, ${si_s_code}, {.d_s = indents }},
+	g.auto_str_funcs.writeln('\tstring res = builtin__str_intp(2, _MOV((StrIntpData[]){
 		{_S("${clean_type_v_type_name}("), ${si_s_code}, {.d_s = tmp_ds }},
 		{_S(")"), 0, {.d_c = 0 }}
 	}));')
-	g.auto_str_funcs.writeln('\tbuiltin__string_free(&indents);')
 	g.auto_str_funcs.writeln('\tbuiltin__string_free(&tmp_ds);')
 	g.auto_str_funcs.writeln('\treturn res;')
 	g.auto_str_funcs.writeln('}')

vlib/v/tests/aliases/alias_in_a_struct_field_autostr_test.v

@@ -8,5 +8,5 @@ fn test_string_interpolation_of_alias() {
 	x := Abc{
 		d: i64(9_123_456_789)
 	}
-	assert '${x}' == 'Abc{\n    d:     Duration(9123456789)\n}'
+	assert '${x}' == 'Abc{\n    d: Duration(9123456789)\n}'
 }

vlib/v/tests/comptime/comptime_var_param_test.v

@@ -19,7 +19,7 @@ fn test_main() {
 	aa := Aa{}
 
 	assert encode_struct(aa) == 'Aa{
-    sub:     AliasType(Bb{
+    sub: AliasType(Bb{
     a: 0
 })
 }'

vlib/v/tests/structs/struct_with_alias_embed_test.v

@@ -8,6 +8,6 @@ struct Bar {
 
 fn test_main() {
 	assert Bar{}.str() == 'Bar{
-    Foo2:     Foo2(Foo1{})
+    Foo2: Foo2(Foo1{})
 }'
 }