Warning fixes

src/osg/Camera.cpp

@@ -285,6 +285,8 @@ void Camera::attach(BufferComponent buffer, GLenum internalFormat)
             notify(WARN) << "Camera: STENCIL_BUFFER already attached !" << std::endl;
         }
         break;
+    default:
+        break;
     }
     _bufferAttachmentMap[buffer]._internalFormat = internalFormat;
 }

src/osg/OcclusionQueryNode.cpp

@@ -596,7 +596,8 @@ OcclusionQueryNode::traverseQuery( const osg::Camera* camera, osg::NodeVisitor&
 
         OpenThreads::ScopedLock<OpenThreads::Mutex> lock( _frameCountMutex );
         int& lastQueryFrame = _frameCountMap[ camera ];
-        if ( issueQuery = (curFrame - lastQueryFrame >= _queryFrameCount) )
+        issueQuery = (curFrame - lastQueryFrame >= _queryFrameCount);
+        if (issueQuery)
             lastQueryFrame = curFrame;
     }
     if (issueQuery)