remove unneeded free parts

See bug #71667, free_statement already does the job

Author: weltling

ext/pdo_dblib/dblib_stmt.c

@@ -103,35 +103,13 @@ static int pdo_dblib_stmt_cursor_closer(pdo_stmt_t *stmt TSRMLS_DC)
 	/* Cancel any pending results */
 	dbcancel(H->link);
 
-	if (stmt->columns) {
-		int i = 0;
-		for (; i < stmt->column_count; i++) {
-			if (stmt->columns[i].name) {
-				efree(stmt->columns[i].name);
-			}
-		}
-		efree(stmt->columns); 
-		stmt->columns = NULL;
-	}
-
 	return 1;
 }
 
 static int pdo_dblib_stmt_dtor(pdo_stmt_t *stmt TSRMLS_DC)
 {
 	pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
 
-	if (stmt->columns) {
-		int i = 0;
-		for (; i < stmt->column_count; i++) {
-			if (stmt->columns[i].name) {
-				efree(stmt->columns[i].name);
-			}
-		}
-		efree(stmt->columns); 
-		stmt->columns = NULL;
-	}
-
 	efree(S);
 
 	return 1;