Fix uninitialized variables warnings

krita/image/brushengine/kis_paintop.cc

@@ -58,7 +58,8 @@ struct KisPaintOp::Private {
         : q(_q), dab(0),
           currentScale(1.0),
           currentRotation(0),
-          fanCornersEnabled(false)  {}
+          fanCornersEnabled(false),
+          fanCornersStep(1.0) {}
 
     KisPaintOp *q;
 

krita/image/brushengine/kis_paintop_preset.cpp

@@ -42,7 +42,9 @@
 
 struct KisPaintOpPreset::Private {
     Private()
-        : settings(0) {
+        : settings(0),
+          dirtyPreset(false)
+    {
     }
 
     KisPaintOpSettingsSP settings;
@@ -55,7 +57,6 @@ KisPaintOpPreset::KisPaintOpPreset()
     : KoResource(QString())
     , m_d(new Private)
 {
-    m_d->dirtyPreset = false;
 }
 
 KisPaintOpPreset::KisPaintOpPreset(const QString & fileName)

krita/ui/canvas/kis_display_color_converter.cpp

@@ -50,6 +50,9 @@ struct KisDisplayColorConverter::Private
           paintingColorSpace(0),
           monitorColorSpace(0),
           monitorProfile(0),
+          renderingIntent(KoColorConversionTransformation::InternalRenderingIntent),
+          conversionFlags(KoColorConversionTransformation::InternalConversionFlags),
+          displayFilter(0),
           intermediateColorSpace(0),
           displayRenderer(new DisplayRenderer(_q, _parentCanvas))
     {