Merge branch 'mmmmove' into 'master'

Sprinkle a couple of std::move

See merge request OpenMW/openmw!1147

components/resource/keyframemanager.cpp

@@ -40,7 +40,7 @@ namespace Resource
                         }
 
                         osg::ref_ptr<Resource::Animation> mergedAnimationTrack = new Resource::Animation;
-                        std::string animationName = animation->getName();
+                        const std::string animationName = animation->getName();
                         mergedAnimationTrack->setName(animationName);
 
                         const osgAnimation::ChannelList& channels = animation->getChannels();

components/sceneutil/mwshadowtechnique.cpp

@@ -2141,7 +2141,7 @@ struct ConvexHull
                 finalEdges.push_back(edge);
         }
 
-        _edges = finalEdges;
+        _edges = std::move(finalEdges);
     }
 
     void transform(const osg::Matrixd& m)

components/sceneutil/shadowsbin.cpp

@@ -221,7 +221,7 @@ void ShadowsBin::sortImplementation()
     }
     if (!noTestRoot->_leaves.empty())
         newList.push_back(noTestRoot);
-    _stateGraphList = newList;
+    _stateGraphList = std::move(newList);
 }
 
 }