fix RESIGNAL to save and pass the m_row_count too

mysql-test/main/get_diagnostics.result

@@ -1598,7 +1598,7 @@ ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
 GET DIAGNOSTICS CONDITION 1 @num = ROW_NUMBER, @msg = MESSAGE_TEXT;
 SELECT @num, @msg;
 @num	@msg
-1	Duplicate entry '1' for key 'PRIMARY'
+2	Duplicate entry '1' for key 'PRIMARY'
 DROP PROCEDURE sp;
 DROP TABLE t1;
 # Checking more errors

sql/sp_rcontext.h

@@ -111,15 +111,18 @@ class sp_rcontext : public Sql_alloc
     /// Text message.
     char *message;
 
+    /** Row number where the condition has happened */
+    ulong m_row_number;
+
     /// The constructor.
     ///
     /// @param _sql_condition  The SQL condition.
     /// @param arena           Query arena for SP
-    Sql_condition_info(const Sql_condition *_sql_condition,
-                       Query_arena *arena)
+    Sql_condition_info(const Sql_condition *_sql_condition, Query_arena *arena)
       :Sql_condition_identity(*_sql_condition)
     {
       message= strdup_root(arena->mem_root, _sql_condition->get_message_text());
+      m_row_number= _sql_condition->m_row_number;
     }
   };
 

sql/sql_signal.cc

@@ -441,7 +441,7 @@ bool Sql_cmd_resignal::execute(THD *thd)
   }
 
   Sql_condition signaled_err(thd->mem_root, *signaled, signaled->message,
-                             da->current_row_for_warning());
+                             signaled->m_row_number);
 
   if (m_cond)
   {