fix a collada import bug (#5561)

code/AssetLib/Collada/ColladaLoader.cpp

@@ -247,7 +247,9 @@ aiNode *ColladaLoader::BuildHierarchy(const ColladaParser &pParser, const Collad
 
     // add children. first the *real* ones
     node->mNumChildren = static_cast<unsigned int>(pNode->mChildren.size() + instances.size());
-    node->mChildren = new aiNode *[node->mNumChildren];
+    if (node->mNumChildren != 0) {
+        node->mChildren = new aiNode * [node->mNumChildren];
+    }
 
     for (size_t a = 0; a < pNode->mChildren.size(); ++a) {
         node->mChildren[a] = BuildHierarchy(pParser, pNode->mChildren[a]);

code/AssetLib/Collada/ColladaParser.cpp

@@ -635,7 +635,8 @@ void ColladaParser::ReadController(XmlNode &node, Collada::Controller &controlle
         const std::string &currentName = currentNode.name();
         if (currentName == "morph") {
             controller.mType = Morph;
-            controller.mMeshId = currentNode.attribute("source").as_string();
+            std::string id = currentNode.attribute("source").as_string();
+            controller.mMeshId = id.substr(1, id.size() - 1);
             int methodIndex = currentNode.attribute("method").as_int();
             if (methodIndex > 0) {
                 std::string method;