[geany/geany] 4d92e0: Fix warnings

[Lex Trotman]

  Branch: refs/heads/master
  Home:   https://github.com/geany/geany

  Commit: 4d92e0530b7e64f4cbeda2d264b7e705cfd75699
      https://github.com/geany/geany/commit/4d92e0530b7e64f4cbeda2d264b7e705cfd75699
  Author: Lex Trotman <elextr at gmail.com>
  Date:   2011-11-06 (Sun, 06 Nov 2011)

  Changed paths:
    M src/dialogs.c
  M src/sidebar.c
  M tagmanager/js.c

  Log Message:
  -----------
  Fix warnings

Fix warnings that appeared with GCC 4.6
js.c:1067:10: warning: variable ‘is_prototype’ set but not used
dialogs.c:173:2: warning: missing initializer
dialogs.c:173:2: warning: (near initialization for ‘value.data’)
sidebar.c:534:17: warning: unused variable ‘doc’