cli.c: Properly initialize debug_modules and verbose_modules.

This avoids some lock errors on the core set {debug,verbose} commands.
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Merged revisions 386049 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 386051 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@386054 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/cli.c

@@ -102,9 +102,9 @@ struct module_level {
 AST_RWLIST_HEAD(module_level_list, module_level);
 
 /*! list of module names and their debug levels */
-static struct module_level_list debug_modules;
+static struct module_level_list debug_modules = AST_RWLIST_HEAD_INIT_VALUE;
 /*! list of module names and their verbose levels */
-static struct module_level_list verbose_modules;
+static struct module_level_list verbose_modules = AST_RWLIST_HEAD_INIT_VALUE;
 
 AST_THREADSTORAGE(ast_cli_buf);