core: update pipeline api usage

bshell.core/cmdlets/foreach-object.c

@@ -50,7 +50,7 @@ static enum bshell_status process_record(
 
 	bshell_runtime_push_scope(rt, p->f_block);
 	bshell_variable *item = bshell_runtime_define_var(rt, "_");
-	bshell_variable_set_value(item, &in);
+	bshell_variable_set_value(item, in);
 	fx_value out = bshell_runtime_eval(rt);
 	bshell_runtime_pop_scope(rt);
 	fx_value_unset(&in);

bshell.core/cmdlets/get-verb.c

@@ -56,11 +56,7 @@ static enum bshell_status process_record(
 			continue;
 		}
 
-		bshell_verb_ref(verb);
-		bshell_pipeline_write_value(
-			pipeline,
-			fx_value_ref_copy_return(v),
-			false);
+		bshell_pipeline_write_value(pipeline, *v, false);
 		break;
 	} while (1);