Fix for some coverity scan defects

apps/openmw/mwgui/mapwindow.hpp

@@ -72,6 +72,11 @@ namespace MWGui
         {
             MarkerUserData(MWRender::LocalMap* map)
                 : mLocalMapRender(map)
+                , interior(false)
+                , cellX(0)
+                , cellY(0)
+                , nX(0.f)
+                , nY(0.f)
             {
             }
 

apps/openmw/mwrender/globalmap.hpp

@@ -88,7 +88,8 @@ namespace MWRender
         struct ImageDest
         {
             ImageDest()
-                : mFramesUntilDone(3) // wait an extra frame to ensure the draw thread has completed its frame.
+                : mX(0), mY(0)
+                , mFramesUntilDone(3) // wait an extra frame to ensure the draw thread has completed its frame.
             {
             }
 

apps/openmw/mwrender/ripplesimulation.hpp

@@ -65,10 +65,6 @@ namespace MWRender
         osg::ref_ptr<osg::PositionAttitudeTransform> mParticleNode;
 
         std::vector<Emitter> mEmitters;
-
-        float mRippleLifeTime;
-        float mRippleRotSpeed;
-
     };
 
 }

apps/openmw/mwrender/sky.cpp

@@ -162,6 +162,12 @@ protected:
 class CloudUpdater : public SceneUtil::StateSetUpdater
 {
 public:
+    CloudUpdater()
+        : mAnimationTimer(0.f)
+        , mOpacity(0.f)
+    {
+    }
+
     void setAnimationTimer(float timer)
     {
         mAnimationTimer = timer;
@@ -762,9 +768,6 @@ public:
         mat->setColorMode(osg::Material::OFF);
         stateset->setAttributeAndModes(mat, osg::StateAttribute::ON);
     }
-
-private:
-    float mAlpha;
 };
 
 void SkyManager::createRain()