Fixed compiler warnings

sql-common/client.c

@@ -129,10 +129,6 @@ static void mysql_close_free(MYSQL *mysql);
 static void mysql_prune_stmt_list(MYSQL *mysql);
 static int cli_report_progress(MYSQL *mysql, char *packet, uint length);
 
-#if !defined(__WIN__)
-static int wait_for_data(my_socket fd, uint timeout);
-#endif
-
 CHARSET_INFO *default_client_charset_info = &my_charset_latin1;
 
 /* Server error code and message */

sql/opt_range.cc

@@ -3557,9 +3557,9 @@ bool calculate_cond_selectivity_for_table(THD *thd, TABLE *table, Item *cond)
 	    break; 
           bitmap_set_bit(&handled_columns, key_part->fieldnr-1);
         }
-        double selectivity_mult;
         if (i)
         {
+          double UNINIT_VAR(selectivity_mult);
           /* 
             There is at least 1-column prefix of columns whose selectivity has
             not yet been accounted for.

sql/rpl_gtid.cc

@@ -122,7 +122,7 @@ rpl_slave_state::check_duplicate_gtid(rpl_gtid *gtid, rpl_group_info *rgi)
   int res;
   bool did_enter_cond= false;
   PSI_stage_info old_stage;
-  THD *thd;
+  THD *UNINIT_VAR(thd);
   Relay_log_info *rli= rgi->rli;
 
   mysql_mutex_lock(&LOCK_slave_state);

sql/sql_select.cc

@@ -23479,7 +23479,7 @@ int JOIN::save_explain_data_intern(Explain_query *output, bool need_tmp_table,
                                    bool need_order, bool distinct, 
                                    const char *message)
 {
-  Explain_node *explain_node;
+  Explain_node *UNINIT_VAR(explain_node);
   JOIN *join= this; /* Legacy: this code used to be a non-member function */
   THD *thd=join->thd;
   const CHARSET_INFO *cs= system_charset_info;

storage/tokudb/ha_tokudb.cc

@@ -172,6 +172,7 @@ static inline uint32_t get_len_of_offsets(KEY_AND_COL_INFO* kc_info, TABLE_SHARE
 }
 
 
+#ifdef NOT_USED
 static int get_thread_query_string(my_thread_id id, String &qs) {
   mysql_mutex_lock(&LOCK_thread_count);
   I_List_iterator<THD> it(threads);
@@ -196,6 +197,7 @@ static int get_thread_query_string(my_thread_id id, String &qs) {
   mysql_mutex_unlock(&LOCK_thread_count);
   return 0;
 }
+#endif
 
 static int allocate_key_and_col_info ( TABLE_SHARE* table_share, KEY_AND_COL_INFO* kc_info) {
     int error;