Change some explicit usage

src/analyzer/blockanalyzer.h

@@ -41,7 +41,7 @@ class BlockAnalyzer : public Analyzer::Base {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE BlockAnalyzer(QWidget*);
+  Q_INVOKABLE explicit BlockAnalyzer(QWidget*);
 
   static const uint kHeight;
   static const uint kWidth;

src/analyzer/boomanalyzer.h

@@ -40,7 +40,7 @@ class BoomAnalyzer : public Analyzer::Base {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE BoomAnalyzer(QWidget*);
+  Q_INVOKABLE explicit BoomAnalyzer(QWidget*);
 
   static const char* kName;
 

src/analyzer/fht.h

@@ -63,7 +63,7 @@ class FHT {
   * should be at least 3. Values of more than 3 need a trigonometry table.
   * @see makeCasTable()
   */
-  FHT(int);
+  explicit FHT(int);
 
   ~FHT();
   int sizeExp() const;

src/analyzer/rainbowanalyzer.h

@@ -129,7 +129,7 @@ class NyanCatAnalyzer : public RainbowAnalyzer {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE NyanCatAnalyzer(QWidget* parent);
+  Q_INVOKABLE explicit NyanCatAnalyzer(QWidget* parent);
   
   static const char* kName;
 };
@@ -138,7 +138,7 @@ class RainbowDashAnalyzer : public RainbowAnalyzer {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE RainbowDashAnalyzer(QWidget* parent);
+  Q_INVOKABLE explicit RainbowDashAnalyzer(QWidget* parent);
 
   static const char* kName;
 };