avoid unterminated loop when closing the statement.

Author: wez

ext/pdo_mysql/mysql_statement.c

@@ -69,11 +69,14 @@ static int pdo_mysql_stmt_dtor(pdo_stmt_t *stmt TSRMLS_DC)
 #endif
 #if HAVE_MYSQL_NEXT_RESULT
 	while (mysql_more_results(S->H->server)) {
-		if (mysql_next_result(S->H->server) == 0) {
-			MYSQL_RES *res = mysql_store_result(S->H->server);
-			if (res) {
-				mysql_free_result(res);
-			}
+		MYSQL_RES *res;
+		if (mysql_next_result(S->H->server) != 0) {
+			break;
+		}
+			
+		res = mysql_store_result(S->H->server);
+		if (res) {
+			mysql_free_result(res);
 		}
 	}
 #endif
@@ -602,11 +605,13 @@ static int pdo_mysql_stmt_cursor_closer(pdo_stmt_t *stmt TSRMLS_DC)
 	}
 #if HAVE_MYSQL_NEXT_RESULT
 	while (mysql_more_results(S->H->server)) {
-		if (mysql_next_result(S->H->server) == 0) {
-			MYSQL_RES *res = mysql_store_result(S->H->server);
-			if (res) {
-				mysql_free_result(res);
-			}
+		MYSQL_RES *res;
+		if (mysql_next_result(S->H->server) != 0) {
+			break;
+		}
+		res = mysql_store_result(S->H->server);
+		if (res) {
+			mysql_free_result(res);
 		}
 	}
 #endif