Change appveyor.yml, it's enough to run one version of PHP on Windows

appveyor.yml

@@ -1,28 +1,25 @@
 build: false
+shallow_clone: true
+
 platform:
+  - x86
   - x64
-clone_folder: c:\projects\php-project-workspace
 
-environment:
-  matrix:
-  - php_ver_target: 7.0
-  - php_ver_target: 7.1
+clone_folder: c:\projects\amphp
 
-## Cache composer bits
 cache:
-    - '%LOCALAPPDATA%\Composer\files -> composer.lock'
+  - c:\tools\php -> appveyor.yml
 
-## Set up environment variables
 init:
   - SET PATH=C:\Program Files\OpenSSL;c:\tools\php;%PATH%
   - SET COMPOSER_NO_INTERACTION=1
   - SET PHP=1
   - SET ANSICON=121x90 (121x90)
 
-## Install PHP and Composer, and run the appropriate Composer command
 install:
   - IF EXIST c:\tools\php (SET PHP=0)
-    - ps: appveyor-retry cinst --ignore-checksums -r -y php --version ((choco search php --exact --all-versions -r | select-string -pattern $Env:php_ver_target | Select-Object -first 1) -replace '[php|]','')
+  - IF %PHP%==1 cinst -y OpenSSL.Light
+  - IF %PHP%==1 cinst -y php
   - cd c:\tools\php
   - IF %PHP%==1 copy php.ini-production php.ini /Y
   - IF %PHP%==1 echo date.timezone="UTC" >> php.ini
@@ -32,11 +29,9 @@ install:
   - IF %PHP%==1 echo extension=php_fileinfo.dll >> php.ini
   - IF %PHP%==1 echo @php %%~dp0composer.phar %%* > composer.bat
   - appveyor DownloadFile https://getcomposer.org/composer.phar
-    - cd c:\projects\php-project-workspace
-    - appveyor-retry composer update --no-progress -n
-    - composer show
+  - cd c:\projects\amphp
+  - composer install --prefer-dist --no-progress
 
-## Run the actual test
 test_script:
-    - cd c:\projects\php-project-workspace
+  - cd c:\projects\amphp
   - vendor/bin/phpunit --colors=always

lib/BasicResolver.php

@@ -76,7 +76,7 @@ class BasicResolver implements Resolver {
                 return $records;
             }
 
-            for ($cnames = 0; $cnames < 5; $cnames++) {
+            for ($redirects = 0; $redirects < 5; $redirects++) {
                 try {
                     if ($typeRestriction) {
                         $records = yield $this->query($name, $typeRestriction);