this needs to be the column count, otherwise a db->query() that returns 0 rows

will fail rather than returning a statement with no rows.

ext/pdo_sqlite/sqlite_statement.c

@@ -165,7 +165,7 @@ static int pdo_sqlite_stmt_describe(pdo_stmt_t *stmt, int colno TSRMLS_DC)
 {
 	pdo_sqlite_stmt *S = (pdo_sqlite_stmt*)stmt->driver_data;
 
-	if(colno >= sqlite3_data_count(S->stmt)) {
+	if(colno >= sqlite3_column_count(S->stmt)) {
 		/* error invalid column */
 		pdo_sqlite_error_stmt(stmt);
 		return 0;