[gdb/python] Use GDB_PY_HANDLE_EXCEPTION more often

I found a few more places where we can use GDB_PY_HANDLE_EXCEPTION.

Tested on x86_64-linux.

Approved-By: Tom Tromey <tom@tromey.com>

gdb/python/py-arch.c

@@ -199,8 +199,7 @@ archpy_disassemble (PyObject *self, PyObject *args, PyObject *kw)
 	}
       catch (const gdb_exception &except)
 	{
-	  gdbpy_convert_exception (except);
-	  return NULL;
+	  GDB_PY_HANDLE_EXCEPTION (except);
 	}
 
       gdbpy_ref<> pc_obj = gdb_py_object_from_ulongest (pc);

gdb/python/py-breakpoint.c

@@ -640,8 +640,7 @@ bppy_get_commands (PyObject *self, void *closure)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   return host_string_to_python_string (stb.c_str ()).release ();

gdb/python/py-connection.c

@@ -431,8 +431,7 @@ connpy_send_packet (PyObject *self, PyObject *args, PyObject *kw)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return nullptr;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 }
 

gdb/python/py-frame.c

@@ -389,8 +389,7 @@ frame_info_to_frame_object (const frame_info_ptr &frame)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   return (PyObject *) frame_obj.release ();
@@ -538,8 +537,7 @@ frapy_read_var (PyObject *self, PyObject *args, PyObject *kw)
 	}
       catch (const gdb_exception &except)
 	{
-	  gdbpy_convert_exception (except);
-	  return NULL;
+	  GDB_PY_HANDLE_EXCEPTION (except);
 	}
 
       if (!var)

gdb/python/py-gdb-readline.c

@@ -59,8 +59,7 @@ gdbpy_readline_wrapper (FILE *sys_stdin, FILE *sys_stdout,
       /* This readline callback is called without the GIL held.  */
       gdbpy_gil gil;
 
-      gdbpy_convert_exception (except);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   /* Detect EOF (Ctrl-D).  */

gdb/python/py-mi.c

@@ -168,8 +168,7 @@ gdbpy_execute_mi_command (PyObject *self, PyObject *args, PyObject *kw)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return nullptr;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   return uiout.result ().release ();

gdb/python/py-record-btrace.c

@@ -318,8 +318,7 @@ recpy_bt_insn_decoded (PyObject *self, void *closure)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   return PyBytes_FromString (strfile.string ().c_str ());

gdb/python/py-record.c

@@ -670,7 +670,6 @@ gdbpy_start_recording (PyObject *self, PyObject *args)
 {
   const char *method = NULL;
   const char *format = NULL;
-  PyObject *ret = NULL;
 
   if (!PyArg_ParseTuple (args, "|ss", &method, &format))
     return NULL;
@@ -678,14 +677,12 @@ gdbpy_start_recording (PyObject *self, PyObject *args)
   try
     {
       record_start (method, format, 0);
-      ret = gdbpy_current_recording (self, args);
+      return gdbpy_current_recording (self, args);
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
-
-  return ret;
 }
 
 /* Implementation of gdb.current_recording (self) -> gdb.Record.  */

gdb/python/py-stopevent.c

@@ -74,8 +74,7 @@ py_print_bpstat (bpstat *bs, enum gdb_signal stop_signal)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return nullptr;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   gdbpy_ref<> dict = uiout.result ();

gdb/python/py-tui.c

@@ -415,8 +415,7 @@ gdbpy_register_tui_window (PyObject *self, PyObject *args, PyObject *kw)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return nullptr;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   Py_RETURN_NONE;

gdb/python/py-value.c

@@ -2056,8 +2056,7 @@ convert_value_from_python (PyObject *obj)
     }
   catch (const gdb_exception &except)
     {
-      gdbpy_convert_exception (except);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (except);
     }
 
   return value;

gdb/python/python.c

@@ -972,8 +972,7 @@ gdbpy_decode_line (PyObject *self, PyObject *args)
   catch (const gdb_exception &ex)
     {
       /* We know this will always throw.  */
-      gdbpy_convert_exception (ex);
-      return NULL;
+      GDB_PY_HANDLE_EXCEPTION (ex);
     }
 
   if (!sals.empty ())