[libcalamares] Drop intermediate CLog class

- All the real work is done in CDebug, so remove the base class.

src/libcalamares/utils/Logger.cpp

@@ -172,20 +172,26 @@ setupLogfile()
     qInstallMessageHandler( CalamaresLogHandler );
 }
 
-CLog::CLog( unsigned int debugLevel )
+CDebug::CDebug( unsigned int debugLevel )
     : QDebug( &m_msg )
     , m_debugLevel( debugLevel )
 {
+    if ( debugLevel <= LOGERROR )
+    {
+        m_msg = QStringLiteral( "ERROR:" );
+    }
+    else if ( debugLevel <= LOGWARNING )
+    {
+        m_msg = QStringLiteral( "WARNING:" );
+    }
 }
 
 
-CLog::~CLog()
+CDebug::~CDebug()
 {
     log( m_msg.toUtf8().data(), m_debugLevel );
 }
 
-CDebug::~CDebug() {}
-
 const char Continuation[] = "\n    ";
 const char SubEntry[] = " .. ";
 

src/libcalamares/utils/Logger.h

@@ -41,35 +41,17 @@ enum
     LOGVERBOSE = 8
 };
 
-class DLLEXPORT CLog : public QDebug
+class DLLEXPORT CDebug : public QDebug
 {
 public:
-    explicit CLog( unsigned int debugLevel );
-    virtual ~CLog();
+    explicit CDebug( unsigned int debugLevel = LOGDEBUG );
+    virtual ~CDebug();
 
 private:
     QString m_msg;
     unsigned int m_debugLevel;
 };
 
-class DLLEXPORT CDebug : public CLog
-{
-public:
-    CDebug( unsigned int debugLevel = LOGDEBUG )
-        : CLog( debugLevel )
-    {
-        if ( debugLevel <= LOGERROR )
-        {
-            *this << "ERROR:";
-        }
-        else if ( debugLevel <= LOGWARNING )
-        {
-            *this << "WARNING:";
-        }
-    }
-    virtual ~CDebug();
-};
-
 /**
  * @brief The full path of the log file.
  */