Simple fixes (nothing notable)

dbug/dbug.c:
  Remove duplicate va_end() call
mysql-test/mysql-test-run.sh:
  Longer stack trace from valgrind
mysys/my_lib.c:
  Fixed wrong dbug printf
sql/slave.cc:
  Simple optimization
sql/sql_class.cc:
  Added DBUG info

dbug/dbug.c

@@ -919,7 +919,6 @@ void _db_doprnt_ (const char *format,...)
     }
     (void) fprintf (_db_fp_, "%s: ", state->u_keyword);
     (void) vfprintf (_db_fp_, format, args);
-    va_end(args);
     (void) fputc('\n',_db_fp_);
     dbug_flush(state);
     errno=save_errno;

mysql-test/mysql-test-run.sh

@@ -326,7 +326,7 @@ while test $# -gt 0; do
       USE_RUNNING_SERVER=""
       ;;
     --valgrind)
-      VALGRIND="valgrind --alignment=8 --leak-check=yes"
+      VALGRIND="valgrind --alignment=8 --leak-check=yes --num-callers=16"
       EXTRA_MASTER_MYSQLD_OPT="$EXTRA_MASTER_MYSQLD_OPT --skip-safemalloc"
       EXTRA_SLAVE_MYSQLD_OPT="$EXTRA_SLAVE_MYSQLD_OPT --skip-safemalloc"
       SLEEP_TIME_AFTER_RESTART=10

mysys/my_lib.c

@@ -103,7 +103,7 @@ MY_DIR	*my_dir(const char *path, myf MyFlags)
   char	dirent_tmp[sizeof(struct dirent)+_POSIX_PATH_MAX+1];
 #endif
   DBUG_ENTER("my_dir");
-  DBUG_PRINT("my",("path: '%s' stat: %d  MyFlags: %d",path,MyFlags));
+  DBUG_PRINT("my",("path: '%s' MyFlags: %d",path,MyFlags));
 
 #if defined(THREAD) && !defined(HAVE_READDIR_R)
   pthread_mutex_lock(&THR_LOCK_open);

sql/slave.cc

@@ -443,12 +443,10 @@ int terminate_slave_thread(THD* thd, pthread_mutex_t* term_lock,
     be referening freed memory trying to kick it
   */
   THD_CHECK_SENTRY(thd);
-  if (*slave_running)
+
+  while (*slave_running)			// Should always be true
   {
     KICK_SLAVE(thd);
-  }
-  while (*slave_running)
-  {
     /*
       There is a small chance that slave thread might miss the first
       alarm. To protect againts it, resend the signal until it reacts
@@ -456,10 +454,6 @@ int terminate_slave_thread(THD* thd, pthread_mutex_t* term_lock,
     struct timespec abstime;
     set_timespec(abstime,2);
     pthread_cond_timedwait(term_cond, cond_lock, &abstime);
-    if (*slave_running)
-    {
-      KICK_SLAVE(thd);
-    }
   }
   if (term_lock)
     pthread_mutex_unlock(term_lock);

sql/sql_class.cc

@@ -419,12 +419,14 @@ CHANGED_TABLE_LIST* THD::changed_table_dup(const char *key, long key_length)
 #ifdef SIGNAL_WITH_VIO_CLOSE
 void THD::close_active_vio()
 {
+  DBUG_ENTER("close_active_vio");
   safe_mutex_assert_owner(&LOCK_delete); 
   if (active_vio)
   {
     vio_close(active_vio);
     active_vio = 0;
   }
+  DBUG_RETURN;
 }
 #endif