Terminal size to 1-based (#170) (#176)

Author: natbraun

crossterm_terminal/src/sys/winapi.rs

@@ -9,7 +9,7 @@ pub fn exit() {
 pub fn get_terminal_size() -> (u16, u16) {
     if let Ok(buffer) = ScreenBuffer::current() {
         let size = buffer.info().unwrap().terminal_size();
-        (size.width as u16, size.height as u16)
+        (size.width + 1, size.height + 1).into()
     } else {
         (0, 0)
     }

crossterm_terminal/src/terminal/winapi_terminal.rs

@@ -39,8 +39,7 @@ impl ITerminal for WinApiTerminal {
     }
 
     fn terminal_size(&self) -> (u16, u16) {
-        let csbi = ScreenBuffer::current().unwrap();
-        csbi.info().unwrap().terminal_size().into()
+        get_terminal_size()
     }
 
     fn scroll_up(&self, count: i16) -> Result<()> {