Fix latest mypy issues

Author: ronf

asyncssh/scp.py

@@ -1095,6 +1095,8 @@ async def _scp_handler(sftp_server: MaybeAwait[SFTPServer],
     if inspect.isawaitable(sftp_server):
         sftp_server = await sftp_server
 
+    sftp_server: SFTPServer
+
     fs = SFTPServerFS(sftp_server)
 
     handler: Union[_SCPSource, _SCPSink]

asyncssh/sftp.py

@@ -4656,7 +4656,8 @@ async def makedirs(self, path: _SFTPPath, attrs: SFTPAttrs = SFTPAttrs(),
         parts = path.split(b'/')
         last = len(parts) - 1
 
-        exc: Type[SFTPError]
+        exc: Union[Type[SFTPNotADirectory], Type[SFTPFailure],
+                   Type[SFTPFileAlreadyExists]]
 
         for i, part in enumerate(parts):
             curpath = posixpath.join(curpath, part)
@@ -6775,7 +6776,9 @@ async def _process_copy_data(self, packet: SSHPacket) -> None:
                 data = self._server.read(src, read_from_offset, size)
 
                 if inspect.isawaitable(data):
-                    data = await cast(Awaitable[bytes], data)
+                    data = await data
+
+                data: bytes
 
                 result = self._server.write(dst, write_to_offset, data)
 
@@ -8234,6 +8237,8 @@ async def _sftp_handler(sftp_server: MaybeAwait[SFTPServer],
     if inspect.isawaitable(sftp_server):
         sftp_server = await sftp_server
 
+    sftp_server: SFTPServer
+
     handler = SFTPServerHandler(sftp_server, reader, writer, sftp_version)
 
     await handler.run()