Misleading error message when defining empty keyboard macro and no keyboard macro has been defined yet.

[Michael Schierl]

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

- Start emacs with -Q
- Press <f3> and immediately <f4>

Result (in echo area):
Only one keyboard macro defined.

Huh? In fact, there are only *zero* keyboard macros defined (if you do
not count the empty one that has been ignored).

Expected result:
Ignore empty macro

[full *Messages* are below.]

In GNU Emacs 22.1.1 (i386-mingw-nt5.1.2600)
 of 2007-06-02 on RELEASE
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Ic:/gnuwin32/include'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: DEU
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  encoded-kbd-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
<f3> <f4> M-x r e p o r t - e <tab> <return>

Recent messages:
Loading encoded-kb...done
For information about the GNU Project and its goals, type C-h C-p.
Loading kmacro...done
Defining kbd macro...
Keyboard macro defined
Ignore empty macro
Only one keyboard macro defined.
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done