options: add special -leak-report option

Add a special option "-leak-report" that enables talloc leak
reporting.  It only works if it's given as the first argument.

The code abuses the CONF_TYPE_PRINT option type to make main option
parsing ignore the option. The parser incorrectly consumed the
following commandline argument as a "parameter" for options of this
type when they had the flag to not exit after printing the message.
Fix this. It makes no difference for any previously existing option I
think.

cfg-mplayer.h

@@ -296,6 +296,7 @@ const m_option_t mplayer_opts[]={
     {"lircconf", &lirc_configfile, CONF_TYPE_STRING, CONF_GLOBAL, 0, 0, NULL},
 #endif
 
+    {"leak-report", "", CONF_TYPE_PRINT, 0, 0, 0, (void*)1},
     // these should be removed when gmplayer is forgotten
     {"gui", "Internal GUI was removed. Use some other frontend instead.\n", CONF_TYPE_PRINT, 0, 0, 0, NULL},
     {"nogui", "Internal GUI was removed, -nogui is no longer valid.\n", CONF_TYPE_PRINT, 0, 0, 0, NULL},

m_option.c

@@ -970,7 +970,7 @@ static int parse_print(const m_option_t* opt,const char *name, const char *param
 
   if(opt->priv == NULL)
     return M_OPT_EXIT;
-  return 1;
+  return 0;
 }
 
 const m_option_type_t m_option_type_print = {

mplayer.c

@@ -3871,7 +3871,8 @@ if (HAVE_CMOV)
  * file for some tools to link against. */
 #ifndef DISABLE_MAIN
 int main(int argc,char* argv[]){
-
+    if (argc > 1 && !strcmp(argv[1], "-leak-report"))
+        talloc_enable_leak_report();
 
 char * mem_ptr;