evergreen.c: Avoid declarations after labels.

Labels followed by declarations within the same block will trigger
compiler errors on Debian 10 and Debian 11, presumably due to the
older version of gcc in use. As this is technically not correct,
move the declarations prior to the labels.

Resolves: #3

evergreen.c

@@ -1577,10 +1577,12 @@ static int client_menu(struct client *client)
 					/* Message pane and folder pane need redraw */
 					goto resize;
 				} else if (res > 0) {
+					ITEM *selection;
+					int saved_message_item;
 redraw: /* Rerender folder pane, message pane, leave status bar alone */
 					/* Message pane and folder pane need redraw, don't clear status bar */
-					ITEM *selection = current_item(client->message_list.menu);
-					int saved_message_item = item_index(selection);
+					selection = current_item(client->message_list.menu);
+					saved_message_item = item_index(selection);
 					client->refreshflags |= REFRESH_MESSAGE_PANE;
 					client_debug(3, "Redrawing folder/message pane, not status bar");
 					if (redraw_folder_pane(client) || rerender_message_pane_by_index(client, saved_message_item)) {
@@ -1716,10 +1718,10 @@ static int client_menu(struct client *client)
 					return res;
 				}
 			} else { /* FOCUS_MESSAGES */
-viewmsg:
 				/* Selected the focused message */
 				struct message *msg;
 				int needresize;
+viewmsg:
 				if (!current_item(client->message_list.menu)) {
 					/* Mailbox must be empty */
 					beep();
@@ -1745,6 +1747,8 @@ static int client_menu(struct client *client)
 					SUB_MENU_POST_DELAYRESIZE(needresize);
 				}
 				if (res == KEY_LEFT || res == KEY_RIGHT || res == KEY_SLEFT || res == KEY_SRIGHT) {
+					ITEM *selection;
+					int selected_item;
 					/* Navigate between messages.
 					 *
 					 * Pressing the left or right arrow keys while viewing a message
@@ -1760,8 +1764,8 @@ static int client_menu(struct client *client)
 					 * However, if we do need to resize and can't actually open a different
 					 * message now, we'll need to do that below. */
 huntmsg:
-					ITEM *selection = current_item(client->message_list.menu);
-					int selected_item = item_index(selection);
+					selection = current_item(client->message_list.menu);
+					selected_item = item_index(selection);
 					if (res == KEY_LEFT || res == KEY_SLEFT) {
 						if (FIRST_ITEM_IN_MENU_SELECTED(client, selected_item)) {
 							/* We're trying to scroll up off the top of the menu */
@@ -1863,9 +1867,10 @@ static int client_menu(struct client *client)
 				}
 				set_highlighted_folder(client);
 			} else { /* FOCUS_MESSAGES */
-huntupmsg:
 				int selected_item;
-				ITEM *selection = current_item(client->message_list.menu);
+				ITEM *selection;
+huntupmsg:
+				selection = current_item(client->message_list.menu);
 				if (!selection) {
 					client_debug(1, "No selection (mailbox must be empty)");
 					/* Status bar already says mailbox is empty */
@@ -1928,9 +1933,10 @@ static int client_menu(struct client *client)
 				}
 				set_highlighted_folder(client);
 			} else { /* FOCUS_MESSAGES */
-huntdownmsg:
 				int selected_item;
-				ITEM *selection = current_item(client->message_list.menu);
+				ITEM *selection;
+huntdownmsg:
+				selection = current_item(client->message_list.menu);
 				if (!selection) {
 					client_debug(1, "No selection (mailbox must be empty)");
 					/* Status bar already says mailbox is empty */