Fix 3 sonarqube bugs

src/Composer/Autoload/AutoloadGenerator.php

@@ -115,7 +115,7 @@ class AutoloadGenerator
     public function setApcu(bool $apcu, ?string $apcuPrefix = null)
     {
         $this->apcu = $apcu;
-        $this->apcuPrefix = $apcuPrefix !== null ? $apcuPrefix : $apcuPrefix;
+        $this->apcuPrefix = $apcuPrefix;
     }
 
     /**

src/Composer/Autoload/PhpFileCleaner.php

@@ -243,15 +243,13 @@ class PhpFileCleaner
             }
 
             // skip the rest of the line
-            while ($this->index < $this->len) {
+            if ($this->index < $this->len) {
                 $this->skipToNewline();
 
                 // skip newlines
                 while ($this->index < $this->len && ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n")) {
                     $this->index += 1;
                 }
-
-                break;
             }
         }
     }

src/Composer/DependencyResolver/Problem.php

@@ -215,7 +215,7 @@ class Problem
         if (PlatformRepository::isPlatformPackage($packageName)) {
             // handle php/php-*/hhvm
             if (0 === stripos($packageName, 'php') || $packageName === 'hhvm') {
-                $version = self::getPlatformPackageVersion($pool, $packageName, phpversion());
+                $version = self::getPlatformPackageVersion($pool, $packageName);
 
                 $msg = "- Root composer.json requires ".$packageName.self::constraintToText($constraint).' but ';
 
@@ -243,7 +243,7 @@ class Problem
                 $ext = substr($packageName, 4);
                 $msg = "- Root composer.json requires PHP extension ".$packageName.self::constraintToText($constraint).' but ';
 
-                $version = self::getPlatformPackageVersion($pool, $packageName, phpversion($ext) ?: '0');
+                $version = self::getPlatformPackageVersion($pool, $packageName);
                 if (null === $version) {
                     if (extension_loaded($ext)) {
                         return array(
@@ -427,11 +427,14 @@ class Problem
      * @param  string $version the effective runtime version of the platform package
      * @return ?string a version string or null if it appears the package was artificially disabled
      */
-    private static function getPlatformPackageVersion(Pool $pool, string $packageName, string $version): ?string
+    private static function getPlatformPackageVersion(Pool $pool, string $packageName): ?string
     {
         $available = $pool->whatProvides($packageName);
 
-        if (count($available)) {
+        if (!count($available)) {
+            return null;
+        }
+
         $selected = null;
         foreach ($available as $pkg) {
             if ($pkg->getRepository() instanceof PlatformRepository) {
@@ -458,9 +461,6 @@ class Problem
         if ($selected instanceof CompletePackageInterface && isset($extra['config.platform']) && $extra['config.platform'] === true) {
             $version .= '; ' . str_replace('Package ', '', $selected->getDescription());
         }
-        } else {
-            return null;
-        }
 
         return $version;
     }