fixed some pylance issues

Signed-off-by: hugsy <[email protected]>

gef.py

@@ -132,8 +132,8 @@ def update_gef(argv: list[str]) -> int:
 PYTHON_MIN_VERSION: tuple[int, int] = (3, 10)
 PYTHON_VERSION: tuple[int, int] = sys.version_info[0:2]
 GDB_VERSION: tuple[int, int] = tuple(
-    map(int, re.search(r"(\d+)[^\d]+(\d+)", gdb.VERSION).groups())
-)  # type:ignore
+    map(int, re.search(r"(\d+)[^\d]+(\d+)", gdb.VERSION).groups())  # type:ignore
+)
 
 DEFAULT_PAGE_ALIGN_SHIFT = 12
 DEFAULT_PAGE_SIZE = 1 << DEFAULT_PAGE_ALIGN_SHIFT
@@ -4480,7 +4480,7 @@ def new_objfile_handler(evt: "gdb.NewObjFileEvent | None") -> None:
     if evt:
         path = evt.new_objfile.filename or ""
     elif progspace:
-        path = progspace.filename
+        path = progspace.filename or ""
     else:
         raise RuntimeError("Cannot determine file path")
     try:
@@ -4582,8 +4582,9 @@ def get_terminal_size() -> tuple[int, int]:
 
         try:
             tty_rows, tty_columns = struct.unpack(
-                "hh", fcntl.ioctl(1, termios.TIOCGWINSZ, "1234")
-            )  # type: ignore
+                "hh",
+                fcntl.ioctl(1, termios.TIOCGWINSZ, "1234"),  # type: ignore
+            )
             return tty_rows, tty_columns
         except OSError:
             return 600, 100
@@ -5786,7 +5787,7 @@ def do_invoke(self, argv: list[str]) -> None:
 
         try:
             git = which("git")
-        except:
+        except FileNotFoundError:
             git = None
 
         if git:
@@ -9475,7 +9476,7 @@ def context_trace(self) -> None:
         frames = [
             current_frame,
         ]
-        while current_frame != orig_frame and current_frame:
+        while current_frame != orig_frame and current_frame is not None:
             current_frame = current_frame.older()
             if not current_frame:
                 break
@@ -9496,8 +9497,8 @@ def context_trace(self) -> None:
             items.append(f"{pc:#x}")
             if name:
                 frame_args = (
-                    gdb.FrameDecorator.FrameDecorator(current_frame).frame_args() or []
-                )  # type: ignore
+                    gdb.FrameDecorator.FrameDecorator(current_frame).frame_args() or []  # type: ignore
+                )
                 symstr = ", ".join(
                     [
                         f"{Color.yellowify(x.sym)}={x.sym.value(current_frame)!s}"
@@ -13109,7 +13110,7 @@ def file(self) -> pathlib.Path | None:
             return self.remote.file
         progspace = gdb.current_progspace()
         assert progspace
-        fpath: str = progspace.filename
+        fpath: str = progspace.filename or ""
         if fpath and not self._file:
             self._file = pathlib.Path(fpath).expanduser()
         return self._file
@@ -13255,7 +13256,7 @@ def file(self) -> pathlib.Path:
             if not filename:
                 raise RuntimeError("No session started")
             start_idx = len("target:") if filename.startswith("target:") else 0
-            self._file = pathlib.Path(progspace.filename[start_idx:])
+            self._file = pathlib.Path(filename[start_idx:])
         return self._file
 
     @property